Sacked!
Conflict at the Carrock#48 (x5/x4)
Treachery

When Revealed: Attach to a hero with no 'Sacked!' cards attached controlled by the first player. (Cannot be canceled.) Counts as a condition attachment with the text:

Attached hero cannot attack, defend, commit to a quest, trigger its effect, or collect resources.

Shadow: If attacking enemy is a Troll resolve this card's 'when revealed' effect.