Crow-Kin Assassin

Clandestine 3 (This creature enters the battlefield with three stealth counters on it. Whenever this creature attacks, you may remove a stealth counter from it. If you do, this creature is unblockable until end of turn.)
Whenever Crow-Kin Assassin deals combat damage to a player, create a 1/1 black and blue Crow creature token with flying and "whenever this creature deals combat damage to a player, draw a card."