Sion, The Undead Juggernaut

Eternalize {3}{r}{b}
Whenever a non-token creature dies this
turn, you may pay 4{r}{b}, if you do exile that creature from its owners graveyard and create
a token copy of it, except it is a 4/4 black zombie. Then put a +1/+1 counter on Sion,
The Undead Juggernaut