Gaant'Hor, vengeful lich

Immortal.
Gaant'Hor, vengeful lich enters with 3 soul counters on it.

{t}: Gaant'Hor deals damage equal to its power to target creature. If it dies, exile it and put a soul counter from Gaant'Hor to it.
Move a soul counter from an exiled creature to Gaant'Hor: get +3/+0 until the end of turn.
{t}, choose an exiled creature with a soul counter on it: put that creature on the battlefield with Zombie in addition to its types and "When this creature dies, move my soul counter to Gaant'Hor".