Cheapest priced copy (Archenemy): $0.35 at Card Kingdom, near mint, their price list as of .
Battering Craghorn 
Creature — Goat Beast · 3/1 · Common · Onslaught · #188
First strike
Morph {1}{R}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern