Ferocious: any creature of defense value > 2, excluding Mynock and Vine Snake. To see this mechanic in action, here's an exclusive spoiler from the new set Tauntaun Bones (V): Deploy on table. Once per turn, may /\ one ferocious creature or Tauntaun. Your ferocious creatures are deploy - 2 and ferocity + 2. Twice per game you may deploy a ferocious creature or Tauntaun from under your Starting Effect. (Immune to Alter.)