Bloodlord of Vaasgoth 
Creature — Vampire Warrior
Bloodthirst 3 (If an opponent was dealt damage this turn, this creature enters with three +1/+1 counters on it.) Flying Whenever you cast a Vampire creature spell, it gains bloodthirst 3.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL