Brinegir

If this card is Normal or Special Summoned: You can target 1 WATER monster in your GY; this card gains ATK equal to that monster's ATK until the end of this turn. If this card is sent to the GY: You can target 1 WATER monster you control; it gains 1000 ATK until the end of this turn. You can only use each effect of "Brinegir" once per turn.

Sea Serpent WATER Effect Monster 7 effect