Activate only if "Umi" is on the field. While "Umi" is on the field, you take no battle damage. If "Umi" is not on the field, destroy this card.
Trap
Continuous Trap
Umi
Dark Beginning 1
Labyrinth of Nightmare
Structure Deck: Fury from the Deep
Retro Pack 2
Realm of the Sea Emperor Structure Deck