Anafri, Demonic Destructor

Partner with Cosier Jan, Mutant Murderer (When this creature enters the battlefield, target player may put Cosier Jan, Mutant Murderer into their hand from their library, then shuffle.)
Changeling (This card is every creature type.)
First strike, bloodthirst 2 (If an opponent was dealt damage this turn, this permanent enters the battlefield with two +1/+1 counters on it.)