Faceless one

Voidmaster 6 (pay 6 life, this creature gets shroud and is unblockable until end of turn)
Whenever Faceless one deals combat damage to a player, put a +1/+1 counter on it.
If you paid Faceless one's voidmaster cost, double the +1/+1 counters on it.
"We told him to stay away from the forest of nightmares, he came back as a corpse."