Mortal Rage

Put three +1/+1 counters on one, two, or three
target armies you control, if you don't have one,
create two 0/0 black zombie armies first. Then,
create three 2/2 black zombies with decayed.
If this spell was cast from your graveyard, it costs {2} or {b}{b} less to cast.
"Rage at mortals is more than you think the undead
can handle."
— Warlord Agar