Karanah, first corrupted

Haste
{t}: {2}{u}{u}{b}{b}{g}{g}, Karanah, first corrupted
becomes a 5/5 zombie crocodile spirit with haste;
return all crocodile creatures from your graveyard
to the battlefield, they are black zombies in addition
to printed color alignment and creature type.
Crocodiles played this way have +2/+0 and have
haste. During your next end step, you lose the game.