whenever urborg scavengers enters the battlefield or attacks, exile target card from a graveyard. put a +1/+1 counter on urborg scavengers.
urborg scavengers has flying as long as a card exiled with it has flying. the same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.
