An ability used by Shade of Aran in the game World of Warcraft. It prevents raid members from moving since any moving during flame wreath will basically result into the raid blowing up. Blizzard in their great wisdom has also made it so that as of now the blowing up can be triggered by snakes from snake trap or by a mage's water elemental etc. etc.
I will not move when flame wreath is cast or the raid blows up.