diff --git a/src/apps/epic/tests/integrated/test_views.py b/src/apps/epic/tests/integrated/test_views.py
index 964e7e8..ea8de8d 100644
--- a/src/apps/epic/tests/integrated/test_views.py
+++ b/src/apps/epic/tests/integrated/test_views.py
@@ -142,6 +142,39 @@ class DropTokenViewTest(TestCase):
             response, reverse("epic:gatekeeper", args=[self.room.id])
         )
 
+    def test_carte_drop_sets_current_room(self):
+        carte = Token.objects.create(user=self.gamer, token_type=Token.CARTE)
+        self.client.post(
+            reverse("epic:drop_token", kwargs={"room_id": self.room.id}),
+            data={"token_id": carte.pk},
+        )
+        carte.refresh_from_db()
+        self.assertEqual(carte.current_room, self.room)
+
+    def test_carte_drop_unequips_trinket(self):
+        carte = Token.objects.create(user=self.gamer, token_type=Token.CARTE)
+        self.gamer.equipped_trinket = carte
+        self.gamer.save(update_fields=["equipped_trinket"])
+        self.client.post(
+            reverse("epic:drop_token", kwargs={"room_id": self.room.id}),
+            data={"token_id": carte.pk},
+        )
+        self.gamer.refresh_from_db()
+        self.assertIsNone(self.gamer.equipped_trinket)
+
+    def test_carte_drop_rejected_when_already_in_different_room(self):
+        other_room = Room.objects.create(name="Other Room", owner=self.gamer)
+        carte = Token.objects.create(
+            user=self.gamer, token_type=Token.CARTE, current_room=other_room,
+        )
+        response = self.client.post(
+            reverse("epic:drop_token", kwargs={"room_id": self.room.id}),
+            data={"token_id": carte.pk},
+        )
+        self.assertEqual(response.status_code, 409)
+        carte.refresh_from_db()
+        self.assertEqual(carte.current_room, other_room)  # unchanged
+
 
 class ConfirmTokenViewTest(TestCase):
     def setUp(self):
@@ -701,6 +734,15 @@ class SelectRoleViewTest(TestCase):
         seat = TableSeat.objects.get(room=self.room, slot_number=1)
         self.assertIsNone(seat.deck_variant)
 
+    def test_select_role_unequips_deck_from_user(self):
+        earthman = DeckVariant.objects.get(slug="earthman")
+        self.client.post(
+            reverse("epic:select_role", kwargs={"room_id": self.room.id}),
+            data={"role": "PC"},
+        )
+        self.founder.refresh_from_db()
+        self.assertIsNone(self.founder.equipped_deck)
+
     def test_select_role_requires_login(self):
         self.client.logout()
         response = self.client.post(
@@ -764,6 +806,55 @@ class SelectRoleViewTest(TestCase):
         )
 
 
+class SelectRoleMultiSeatTest(TestCase):
+    """Carte Blanche multi-seat: second role reuses the deck from the first seat."""
+
+    def setUp(self):
+        self.founder = User.objects.create(email="founder@test.io")
+        self.client.force_login(self.founder)
+        self.room = Room.objects.create(name="Test Room", owner=self.founder)
+        self.room.gate_status = Room.OPEN
+        self.room.table_status = Room.ROLE_SELECT
+        self.room.save()
+        self.earthman = DeckVariant.objects.get(slug="earthman")
+
+    def test_second_role_inherits_deck_from_first_seat_in_room(self):
+        # Founder's first seat: PC already taken with deck assigned
+        TableSeat.objects.create(
+            room=self.room, gamer=self.founder, slot_number=1,
+            role="PC", deck_variant=self.earthman,
+        )
+        # Deck unequipped after first role
+        self.founder.equipped_deck = None
+        self.founder.save(update_fields=["equipped_deck"])
+        # Founder's second seat (Carte Blanche): no role yet
+        second_seat = TableSeat.objects.create(
+            room=self.room, gamer=self.founder, slot_number=2,
+        )
+        self.client.post(
+            reverse("epic:select_role", kwargs={"room_id": self.room.id}),
+            data={"role": "BC"},
+        )
+        second_seat.refresh_from_db()
+        self.assertEqual(second_seat.deck_variant, self.earthman)
+
+    def test_second_role_does_not_unequip_again(self):
+        """No-op unequip when deck was already cleared by the first role."""
+        TableSeat.objects.create(
+            room=self.room, gamer=self.founder, slot_number=1,
+            role="PC", deck_variant=self.earthman,
+        )
+        self.founder.equipped_deck = None
+        self.founder.save(update_fields=["equipped_deck"])
+        TableSeat.objects.create(room=self.room, gamer=self.founder, slot_number=2)
+        self.client.post(
+            reverse("epic:select_role", kwargs={"room_id": self.room.id}),
+            data={"role": "BC"},
+        )
+        self.founder.refresh_from_db()
+        self.assertIsNone(self.founder.equipped_deck)  # still None, not broken
+
+
 class RoomViewAllRolesFilledTest(TestCase):
     """Room view in ROLE_SELECT with all seats assigned shows PICK SIGS button."""
     def setUp(self):
diff --git a/src/apps/epic/views.py b/src/apps/epic/views.py
index 0702713..b654a94 100644
--- a/src/apps/epic/views.py
+++ b/src/apps/epic/views.py
@@ -405,8 +405,13 @@ def drop_token(request, room_id):
         if token.token_type == Token.CARTE:
             # CARTE enters the machine without reserving a slot — all slots
             # become individually claimable via .drop-token-btn
+            if token.current_room_id and token.current_room_id != room.id:
+                return HttpResponse(status=409)
             token.current_room = room
             token.save()
+            if request.user.equipped_trinket_id == token.pk:
+                request.user.equipped_trinket = None
+                request.user.save(update_fields=["equipped_trinket"])
             request.session["kit_token_id"] = str(token.id)
             _notify_gate_update(room_id)
             return redirect("epic:gatekeeper", room_id=room_id)
@@ -566,6 +571,7 @@ def select_role(request, room_id):
         valid_roles = [code for code, _ in TableSeat.ROLE_CHOICES]
         if not role or role not in valid_roles:
             return redirect("epic:room", room_id=room_id)
+        existing = None
         with transaction.atomic():
             active_seat = room.table_seats.select_for_update().filter(
                 role__isnull=True
@@ -575,8 +581,16 @@ def select_role(request, room_id):
             if room.table_seats.filter(role=role).exists():
                 return HttpResponse(status=409)
             active_seat.role = role
-            active_seat.deck_variant = request.user.equipped_deck
+            existing = room.table_seats.filter(
+                gamer=request.user, deck_variant__isnull=False,
+            ).exclude(pk=active_seat.pk).first()
+            active_seat.deck_variant = (
+                existing.deck_variant if existing else request.user.equipped_deck
+            )
             active_seat.save()
+        if not existing and request.user.equipped_deck:
+            request.user.equipped_deck = None
+            request.user.save(update_fields=["equipped_deck"])
         record(room, GameEvent.ROLE_SELECTED, actor=request.user,
                role=role, slot_number=active_seat.slot_number,
                role_display=dict(TableSeat.ROLE_CHOICES).get(role, role))
diff --git a/src/apps/gameboard/static/apps/gameboard/gameboard.js b/src/apps/gameboard/static/apps/gameboard/gameboard.js
index 50100d1..135513c 100644
--- a/src/apps/gameboard/static/apps/gameboard/gameboard.js
+++ b/src/apps/gameboard/static/apps/gameboard/gameboard.js
@@ -64,10 +64,20 @@ function initGameKitTooltips() {
         const tokenId = token.dataset.tokenId;
         const equippedId = gameKit.dataset.equippedId || '';
         const equippedDeckId = gameKit.dataset.equippedDeckId || '';
+        const inUseDeckIds = new Set((gameKit.dataset.inUseDeckIds || '').split(',').filter(Boolean));
         if (deckId) {
-            miniPortal.textContent = (equippedDeckId && deckId === equippedDeckId) ? 'Equipped' : 'Not Equipped';
+            if (inUseDeckIds.has(deckId)) {
+                miniPortal.textContent = 'In-Use';
+            } else {
+                miniPortal.textContent = (equippedDeckId && deckId === equippedDeckId) ? 'Equipped' : 'Not Equipped';
+            }
         } else if (tokenId) {
-            miniPortal.textContent = (equippedId && tokenId === equippedId) ? 'Equipped' : 'Not Equipped';
+            const currentRoomName = token.dataset.currentRoomName || '';
+            if (currentRoomName) {
+                miniPortal.textContent = 'In-Use';
+            } else {
+                miniPortal.textContent = (equippedId && tokenId === equippedId) ? 'Equipped' : 'Not Equipped';
+            }
         }
     }
 
diff --git a/src/apps/gameboard/tests/integrated/test_views.py b/src/apps/gameboard/tests/integrated/test_views.py
index 961cb99..9354a9a 100644
--- a/src/apps/gameboard/tests/integrated/test_views.py
+++ b/src/apps/gameboard/tests/integrated/test_views.py
@@ -4,7 +4,7 @@ from django.test import TestCase
 from django.urls import reverse
 
 from apps.applets.models import Applet, UserApplet
-from apps.epic.models import DeckVariant
+from apps.epic.models import DeckVariant, Room, TableSeat
 from apps.lyric.models import Token, User
 
 
@@ -61,6 +61,45 @@ class GameboardViewTest(TestCase):
         [_] = self.parsed.cssselect("#id_game_kit #id_kit_dice_set")
 
 
+class GameboardDeckInUseTest(TestCase):
+    """Sprint 2: game kit applet renders in-use state for a deck assigned to an active seat."""
+
+    def setUp(self):
+        self.user = User.objects.create(email="gamer@test.io")
+        self.client.force_login(self.user)
+        Applet.objects.get_or_create(slug="game-kit", defaults={"name": "Game Kit", "context": "gameboard"})
+        self.earthman = DeckVariant.objects.get(slug="earthman")
+        self.room = Room.objects.create(name="Wildfire", owner=self.user)
+        self.seat = TableSeat.objects.create(
+            room=self.room, gamer=self.user, slot_number=1,
+            deck_variant=self.earthman,
+        )
+        response = self.client.get("/gameboard/")
+        self.parsed = lxml.html.fromstring(response.content)
+
+    def test_in_use_deck_don_is_disabled(self):
+        [don] = self.parsed.cssselect("#id_kit_earthman_deck .btn-equip")
+        self.assertIn("btn-disabled", don.get("class", ""))
+
+    def test_in_use_deck_doff_is_absent(self):
+        active_doff = self.parsed.cssselect(
+            "#id_kit_earthman_deck .btn-unequip:not(.btn-disabled)"
+        )
+        self.assertEqual(len(active_doff), 0)
+
+    def test_in_use_deck_tooltip_shows_game_name(self):
+        [label] = self.parsed.cssselect("#id_kit_earthman_deck .tt-deck-game-name")
+        self.assertIn("Wildfire", label.text_content())
+
+    def test_non_in_use_deck_has_normal_don(self):
+        fiorentine = DeckVariant.objects.get(slug="fiorentine-minchiate")
+        self.user.unlocked_decks.add(fiorentine)
+        response = self.client.get("/gameboard/")
+        parsed = lxml.html.fromstring(response.content)
+        [don] = parsed.cssselect("#id_kit_fiorentine_deck .btn-equip")
+        self.assertNotIn("btn-disabled", don.get("class", ""))
+
+
 class ToggleGameAppletsViewTest(TestCase):
     def setUp(self):
         self.user = User.objects.create(email="gamer@test.io")
diff --git a/src/apps/gameboard/views.py b/src/apps/gameboard/views.py
index 42c41ef..b2181c7 100644
--- a/src/apps/gameboard/views.py
+++ b/src/apps/gameboard/views.py
@@ -4,7 +4,20 @@ from django.shortcuts import get_object_or_404, redirect, render
 from django.utils import timezone
 
 from apps.applets.utils import applet_context, apply_applet_toggle
-from apps.epic.models import DeckVariant, Room
+
+
+def _annotate_deck_in_use(decks, user):
+    """Attach .in_use_room_name to each deck — the name of the active room using it, or None."""
+    active = {
+        ts.deck_variant_id: ts.room.name
+        for ts in TableSeat.objects.filter(
+            gamer=user, deck_variant__isnull=False,
+        ).select_related("room")
+    }
+    for deck in decks:
+        deck.in_use_room_name = active.get(deck.pk)
+    return decks
+from apps.epic.models import DeckVariant, Room, TableSeat
 from apps.epic.utils import rooms_for_user
 from apps.lyric.models import Token
 
@@ -31,7 +44,7 @@ def gameboard(request):
             "carte": carte,
             "equipped_trinket_id": request.user.equipped_trinket_id,
             "equipped_deck_id": request.user.equipped_deck_id,
-            "deck_variants": list(request.user.unlocked_decks.all()),
+            "deck_variants": _annotate_deck_in_use(list(request.user.unlocked_decks.all()), request.user),
             "free_tokens": free_tokens,
             "free_count": len(free_tokens),
             "applets": applet_context(request.user, "gameboard"),
@@ -55,7 +68,7 @@ def toggle_game_applets(request):
             "carte": request.user.tokens.filter(token_type=Token.CARTE).first(),
             "equipped_trinket_id": request.user.equipped_trinket_id,
             "equipped_deck_id": request.user.equipped_deck_id,
-            "deck_variants": list(request.user.unlocked_decks.all()),
+            "deck_variants": _annotate_deck_in_use(list(request.user.unlocked_decks.all()), request.user),
             "free_tokens": free_tokens,
             "free_count": len(free_tokens),
             "my_games": rooms_for_user(request.user),
diff --git a/src/functional_tests/test_deck_contribution.py b/src/functional_tests/test_deck_contribution.py
index ae2dc81..7b704d4 100644
--- a/src/functional_tests/test_deck_contribution.py
+++ b/src/functional_tests/test_deck_contribution.py
@@ -96,7 +96,7 @@ class DeckContributionTest(FunctionalTest):
         ))
 
         # Navigate to Game Kit → Card Decks to verify UI state
-        self.browser.get(self.live_server_url + "/gameboard/game-kit/")
+        self.browser.get(self.live_server_url + "/gameboard/")
         decks_btn = self.wait_for(
             lambda: self.browser.find_element(By.CSS_SELECTOR, "#id_kit_card_deck")
         )
@@ -152,7 +152,7 @@ class DeckInUseGameKitTest(FunctionalTest):
         session_key = self.create_pre_authenticated_session(GAMER_EMAIL)
         self.browser.get(self.live_server_url)
         self.browser.add_cookie({"name": "sessionid", "value": session_key})
-        self.browser.get(self.live_server_url + "/gameboard/game-kit/")
+        self.browser.get(self.live_server_url + "/gameboard/")
         self.wait_for(
             lambda: self.browser.find_element(By.CSS_SELECTOR, "#id_kit_card_deck")
         ).click()
@@ -180,7 +180,7 @@ class DeckInUseGameKitTest(FunctionalTest):
         session_key = self.create_pre_authenticated_session(GAMER_EMAIL)
         self.browser.get(self.live_server_url)
         self.browser.add_cookie({"name": "sessionid", "value": session_key})
-        self.browser.get(self.live_server_url + "/gameboard/game-kit/")
+        self.browser.get(self.live_server_url + "/gameboard/")
         self.wait_for(
             lambda: self.browser.find_element(By.CSS_SELECTOR, "#id_kit_card_deck")
         ).click()
@@ -201,7 +201,7 @@ class DeckInUseGameKitTest(FunctionalTest):
         session_key = self.create_pre_authenticated_session(GAMER_EMAIL)
         self.browser.get(self.live_server_url)
         self.browser.add_cookie({"name": "sessionid", "value": session_key})
-        self.browser.get(self.live_server_url + "/gameboard/game-kit/")
+        self.browser.get(self.live_server_url + "/gameboard/")
         self.wait_for(
             lambda: self.browser.find_element(By.CSS_SELECTOR, "#id_kit_card_deck")
         ).click()
diff --git a/src/templates/apps/gameboard/_partials/_applet-game-kit.html b/src/templates/apps/gameboard/_partials/_applet-game-kit.html
index c69ed77..8257519 100644
--- a/src/templates/apps/gameboard/_partials/_applet-game-kit.html
+++ b/src/templates/apps/gameboard/_partials/_applet-game-kit.html
@@ -3,7 +3,7 @@
     style="--applet-cols: {{ entry.applet.grid_cols }}; --applet-rows: {{ entry.applet.grid_rows }};"
 >
     <h2><a href="{% url 'game_kit' %}">Game Kit</a></h2>
-    <div id="id_game_kit" data-equipped-id="{{ equipped_trinket_id|default:'' }}" data-equipped-deck-id="{{ equipped_deck_id|default:'' }}">
+    <div id="id_game_kit" data-equipped-id="{{ equipped_trinket_id|default:'' }}" data-equipped-deck-id="{{ equipped_deck_id|default:'' }}" data-in-use-deck-ids="{% for d in deck_variants %}{% if d.in_use_room_name %}{{ d.pk }},{% endif %}{% endfor %}">
         {% if pass_token %}
             <div id="id_kit_pass" class="token" data-token-id="{{ pass_token.pk }}">
                 <i class="fa-solid fa-clipboard"></i>
@@ -21,11 +21,11 @@
             </div>
         {% endif %}
         {% if carte %}
-            <div id="id_kit_carte_blanche" class="token" data-token-id="{{ carte.pk }}">
+            <div id="id_kit_carte_blanche" class="token" data-token-id="{{ carte.pk }}" data-current-room-name="{{ carte.current_room.name|default:'' }}">
                 <i class="fa-solid fa-money-check"></i>
                 <div class="tt">
                     <div class="tt-equip-btns">
-                        {% if carte.pk == equipped_trinket_id %}<button class="btn btn-equip btn-disabled" data-token-id="{{ carte.pk }}">×</button><button class="btn btn-unequip" data-token-id="{{ carte.pk }}">DOFF</button>{% else %}<button class="btn btn-equip" data-token-id="{{ carte.pk }}">DON</button><button class="btn btn-unequip btn-disabled" data-token-id="{{ carte.pk }}">×</button>{% endif %}
+                        {% if carte.current_room %}<button class="btn btn-equip btn-disabled" data-token-id="{{ carte.pk }}">×</button><button class="btn btn-unequip btn-disabled" data-token-id="{{ carte.pk }}">×</button>{% elif carte.pk == equipped_trinket_id %}<button class="btn btn-equip btn-disabled" data-token-id="{{ carte.pk }}">×</button><button class="btn btn-unequip" data-token-id="{{ carte.pk }}">DOFF</button>{% else %}<button class="btn btn-equip" data-token-id="{{ carte.pk }}">DON</button><button class="btn btn-unequip btn-disabled" data-token-id="{{ carte.pk }}">×</button>{% endif %}
                     </div>
                     <h4 class="tt-title">{{ carte.tooltip_name }}</h4>
                     <p class="tt-description">{{ carte.tooltip_description }}</p>
@@ -33,6 +33,7 @@
                         <p class="tt-shoptalk"><em>{{ carte.tooltip_shoptalk }}</em></p>
                     {% endif %}
                     <p class="tt-expiry">{{ carte.tooltip_expiry }}</p>
+                    {% if carte.current_room %}<p class="tt-token-room-name">In game: {{ carte.current_room.name }}</p>{% endif %}
                 </div>
             </div>
         {% endif %}
@@ -72,10 +73,13 @@
             <i class="fa-regular fa-id-badge"></i>
             <div class="tt">
                 <div class="tt-equip-btns">
-                    {% if deck.pk == equipped_deck_id %}<button class="btn btn-equip btn-disabled" data-deck-id="{{ deck.pk }}">×</button><button class="btn btn-unequip" data-deck-id="{{ deck.pk }}">DOFF</button>{% else %}<button class="btn btn-equip" data-deck-id="{{ deck.pk }}">DON</button><button class="btn btn-unequip btn-disabled" data-deck-id="{{ deck.pk }}">×</button>{% endif %}
+                    {% if deck.in_use_room_name %}<button class="btn btn-equip btn-disabled" data-deck-id="{{ deck.pk }}">×</button><button class="btn btn-unequip btn-disabled" data-deck-id="{{ deck.pk }}">×</button>{% elif deck.pk == equipped_deck_id %}<button class="btn btn-equip btn-disabled" data-deck-id="{{ deck.pk }}">×</button><button class="btn btn-unequip" data-deck-id="{{ deck.pk }}">DOFF</button>{% else %}<button class="btn btn-equip" data-deck-id="{{ deck.pk }}">DON</button><button class="btn btn-unequip btn-disabled" data-deck-id="{{ deck.pk }}">×</button>{% endif %}
                 </div>
-                <h4 class="tt-title">{{ deck.name }}</h4>
-                <p class="tt-description">{{ deck.card_count }} cards</p>
+                <h4 class="tt-title">{{ deck.name }}{% if deck.is_default %} <span class="token-count">(Default)</span>{% endif %}</h4>
+                <p class="tt-description">{{ deck.card_count }}-card Tarot deck</p>
+                {% if deck.description %}<p class="tt-shoptalk"><em>{{ deck.description }}</em></p>{% endif %}
+                <p class="tt-shoptalk">Stock version <span class="tt-subcounter">(0 substitutions)</span></p>
+                {% if deck.in_use_room_name %}<p class="tt-deck-game-name">In game: {{ deck.in_use_room_name }}</p>{% endif %}
             </div>
         </div>
         {% empty %}
diff --git a/src/templates/core/_partials/_kit_bag_panel.html b/src/templates/core/_partials/_kit_bag_panel.html
index 40556ff..955a917 100644
--- a/src/templates/core/_partials/_kit_bag_panel.html
+++ b/src/templates/core/_partials/_kit_bag_panel.html
@@ -1,20 +1,23 @@
-{% if equipped_deck %}
 <div class="kit-bag-section">
     <span class="kit-bag-label">Deck</span>
     <div class="kit-bag-row">
+        {% if equipped_deck %}
         <div class="kit-bag-deck" data-deck-id="{{ equipped_deck.pk }}">
             <i class="fa-regular fa-id-badge"></i>
             <div class="tt">
                 <h4 class="tt-title">{{ equipped_deck.name }}{% if equipped_deck.is_default %} <span class="token-count">(Default)</span>{% endif %}</h4>
                 <p class="tt-description">{{ equipped_deck.card_count }}-card Tarot deck</p>
-                <p class="tt-shoptalk"><em>placeholder comment</em></p>
-                <p class="tt-effect">active</p>
-                <p class="tt-expiry">Stock version</p>
+                {% if equipped_deck.description %}<p class="tt-shoptalk"><em>{{ equipped_deck.description }}</em></p>{% endif %}
+                <p class="tt-shoptalk">Stock version <span class="tt-subcounter">(0 substitutions)</span></p>
             </div>
         </div>
+        {% else %}
+        <div class="kit-bag-placeholder">
+            <i class="fa-regular fa-id-badge"></i>
+        </div>
+        {% endif %}
     </div>
 </div>
-{% endif %}
 
 <div class="kit-bag-section">
     <span class="kit-bag-label">Dice</span>