- Adarkar Valkyrie delayed trigger should only trigger once

git-svn-id: http://svn.slightlymagic.net/forge/trunk@27102 269b9781-a132-4a9b-9d4e-f004f1b56b58
Fix bug in Swirl the Mists (accidentally introduced in r27099).

git-svn-id: http://svn.slightlymagic.net/forge/trunk@27103 269b9781-a132-4a9b-9d4e-f004f1b56b58