Indestructible. Immune to player card effects.
Forced: When Bane of Amon Lanc attacks you, discard a random card from your hand. Bane of Amon Lanc gets +X for this attack, where X is that card's printed cost.
Indestructible. Immune to player card effects.
Forced: When Sorcerer of Dol Guldur attacks you, discard the top card of your deck. Then, discard each copy of that card from play.
"A great kind and sorcerer he was of old, and now he wields a deadly fear."
–Gandalf, The Fellowship of the Ring
Indestructible. Immune to player card effects.
Forced: When Chieftain Morlug attacks you, discard cards from the top of the encounter deck until an enemy is discarded and put it into play engaged with you.
Forced: When Dungeon Dweller attacks you, discard an ally you control.
Sauron would send her prisoners that he had no better uses for: he would have them driven to her hold, and report brought back to him of the play she made.
–The Two Towers