The Mouth of Sauron
The Mountain of Fire#31 (x1)
Enemy
(99) 4 6 5 11
Mordor.  
Immune to player card effects. Cannot leave the staging area.

Forced: After a player cancels a 'when revealed' effect, The Mouth of Sauron makes an immediate attack against that player.

The Lieutenant of the Tower of Barad-dûr he was...
-The Return of the King