Decapitated Mimicry: When Headless Horseman Kills a Beastie, it is able to copy one Attack or Ability until the end of your next turn.
SPECTRAL AXE
Spectral Axe gains +25 damage for every Black Aura Page in the Arena.
Leave a carved pumpkin outside your door on the night before Halloween... you might luck out and the Headless Horseman will take that instead of your head.