Paces, light of the ghoti

Flash

You may exile this creature, cast 1 fish creature from your hand rather than pay it's mana cost

During the upkeep of the next turn, whenever this card was exiled: put it on the battlefield

During opponent main phase, whenever this card was put on the battlefield at the dame turn: put creatures you control to the graveyard (including this card): put 1 fish creature from your library to the battlefield with total mana value of creatures you put to the graveyard