diff --git a/src/functional_tests/test_game_my_sea.py b/src/functional_tests/test_game_my_sea.py
index 16ca995..fbca23b 100644
--- a/src/functional_tests/test_game_my_sea.py
+++ b/src/functional_tests/test_game_my_sea.py
@@ -205,8 +205,20 @@ class MySeaDrawSeaLandingTest(FunctionalTest):
         """User w. sig → /gameboard/my-sea/ shows the DRY table hex (re-
         used from my-sign / the room shell) w. a central FREE DRAW btn.
         Element ID `id_draw_sea_btn` describes intent (the draw entry
-        point) — a future sprint will conditionally swap the label to
-        DRAW SEA once the daily free has been used."""
+        point); the hex-center btn is a 3-way state machine:
+        - FREE DRAW (`#id_draw_sea_btn`) — fresh user (no active row, no
+          deposit). Pinned here.
+        - PAID DRAW (`#id_my_sea_paid_draw_btn`) — deposit reserved.
+          Pinned by `MySeaLandingPaidDrawTest`.
+        - GATE VIEW (`#id_my_sea_gate_view_btn`) — quota spent, no
+          deposit (post-DEL). Pinned by
+          `MySeaDeleteDrawAndGuardPortalTest` (the DEL-confirm flow).
+
+        The three IDs are mutually exclusive — only one renders at a
+        time. This test pins the fresh-user side of that exclusion
+        (FREE DRAW present, the other two absent); the deposit + post-
+        DEL sides have their own dedicated FTs that pin the same
+        invariant from the other directions."""
         self.create_pre_authenticated_session(self.email)
         self.browser.get(self.live_server_url + "/gameboard/my-sea/")
         # data-phase=landing on the page wrapper
@@ -221,6 +233,17 @@ class MySeaDrawSeaLandingTest(FunctionalTest):
         self.assertIn("FREE", btn.text.upper())
         self.assertIn("DRAW", btn.text.upper())
         self.assertIn("btn-primary", btn.get_attribute("class"))
+        # Mutual exclusion: PAID DRAW + GATE VIEW must NOT also render.
+        self.assertEqual(
+            len(page.find_elements(By.CSS_SELECTOR, "#id_my_sea_paid_draw_btn")),
+            0,
+            "PAID DRAW btn must not render when no deposit is reserved",
+        )
+        self.assertEqual(
+            len(page.find_elements(By.CSS_SELECTOR, "#id_my_sea_gate_view_btn")),
+            0,
+            "GATE VIEW btn must not render when no active draw row exists",
+        )
 
     # ── Test 2 ───────────────────────────────────────────────────────────────