Frenzied Creature
The Wilds of Rhovanion #18 (x2/x1)
Treachery

When Revealed: Add the top card of the Evil Creatures deck to the staging area and attach Frenzied Creature to it. (Counts as a Condition attachment with the text: "Attached enemy gets +1 +1 +1 and is immune to player card effects")

Shadow: Attach this card to attacking enemy.