Shark Brick Fist (EB04-020) - The Azure Sea's Seven Release Event Cards

[Counter] Up to 1 of your {Fish-Man} type Leader or Character cards gains +3000 power during this battle. Then, set up to 1 of your {Fish-Man} type Characters as active.

[Trigger] Rest up to 1 of your opponent's Characters with a cost of 4 or less.