IJN Taihou

Flying, Annihilator 4

When IJN Taihou enters the battlefield, exile all
creatures you control. Reveal your hand, exile all
creature cards from it. Reveal the top 20 cards of
your library, exile all creature cards revealed this
way. Put the rest into your graveyard.

When IJN Taihou leaves the battlefield, return all
exiled creatures to the battlefield under your
control.