Ythis, Titan of Plague's Grief

When Ythis enters the battlefield, sacrifice it
unless it escaped.
Whenever Ythis enters the battlefield or attacks,
create a black 0/0 Germ creature token with deathtouch then put a +1/+1 counter on each
Germ you control.
Escape—{b}{b}{g}{g}, Exile five other cards from
your graveyard. (You may cast this card from your graveyard for its escape cost.)