Gúthwinë
The Return of the King #11 (x3)
Attachment
[2]
Item.   Weapon.  

Attach to a Rohan hero. Restricted.

Response: After attached hero is declared as an attacker, exhaust Gúthwinë to give that hero +2 Attack for this attack. If this attack destroys an enemy, return a Rohan ally from your discard pile to your hand.

"Gúthwinë!" cried Éomer. "Gúthwinë for the Mark!"

-The Two Towers