Oracle Text

Creature — Skeleton Horror

Wretched Bonemass's power and toughness are each equal to the total power of the exiled cards used to craft it. This creature has flying as long as an exiled card used to craft it has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, and vigilance.