diff --git a/.claude/skills/wizwar-duel/SKILL.md b/.claude/skills/wizwar-duel/SKILL.md
index de6dd57..89bfe95 100644
--- a/.claude/skills/wizwar-duel/SKILL.md
+++ b/.claude/skills/wizwar-duel/SKILL.md
@@ -197,6 +197,14 @@ probing legality is free, so when unsure, try it and read the error.
 - Sector relocation can REWRITE the whole world mid-game — arms move,
   warps rewire, routes invert. After any rotate/relocate event, throw
   away every cached route and re-run the router.
+- Eric's deeper frame: on wrap boards (especially 3- and 5-sector
+  layouts) RELOCATE SECTOR is a TOPOLOGY WEAPON — one shift breaks
+  ALL the curved warps at once and "everything is just across the
+  board." Its payload is everyone else's stale mental map: the caster
+  knows the new sewing instantly. Hold it for the moment an enemy's
+  plan leans on a wrap (a warp delivery lane, a rim escape), then cut
+  the seam. Conversely, never build a plan whose ONLY road is a warp
+  while an opponent might hold this card.
 
 ## The board is a torus (from Eric, after game eleven)