Zep, ruby of the ghoti

Flash

You may exile this card from your hand, target fish creature in your graveyard: exile it

During opponent turn, whenever this card is exiled: you may put it on the battlefield

Whenever this card enter, you may 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 by this ability