The Great Wall of the Twelve Sacred Knights
Prevent all damage that would be dealt to you. If 900 or more damage was prevented by this ability this turn, banish this card.
Cocoon consists of two parts: a surface world illuminated by Solaris and the moons and an underground world only illuminated by the moons. This giant barrier is part of the Twelve Realms and manned by the armies of the Twelve Sacred Knights, to keep invading monsters at bay.