Bloodthirst Vrykolakas

Bestow {3}{r}{r} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)
Whenever Bloodthirst Vrykolakas or enchanted creature deals combat damage to a player, put a +1/+1 counter on it.
Enchanted creature gets +3/+2.