■ When you put this creature into the battle zone , choose one of your opponent 's creatures in the battle zone and tap it.

■ Over Drive — Water x2 (When you summon this creature , you may tap another 2 water cards in your mana zone . If you do, this creature gets the following ability .) When you put this creature into the battle zone , choose a creature in the battle zone and return it to owner 's hand .