Heirs of Stromkirk is a common Creature — Vampire card from Avacyn Restored (AVR), collector number 140. Current market price: $0.11 (foil $0.89), TCGplayer market prices via Scryfall.
Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.) Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.