March of the Damned

Whenever a creature dies, exile it instead with a
damnation counter on it.
{7}, Sacrifice March of the Damned: Return each
creature card with a damnation counter on it
from exile to the battlefield under your control.
They become Zombies in addition to their other
types and have base power and toughness 2/2.
You lose 2 life for each creature put onto the
battlefield this way.