If you have discarded a card with 6 or more [Power] this turn, Massacre gains +2 [Power] and intimidate.
If Massacre is discarded to pay the cost of a Brute attack action card, the attack gains intimidate.
Near Mint 1st Edition Normal - $5.10
Lightly Played 1st Edition Normal - $4.60
Moderately Played 1st Edition Normal - $4.10
Heavily Played 1st Edition Normal - $3.60
Damaged 1st Edition Normal - $2.60