William Keller wrote:
The player draws Cut Off and has to remove an ally. His only ally is RoI. Does he go into the encounter discard pile or the player-controller discard pile?
When cards are discarded, they go back to where they came from. If it is an encounter card, it goes back to the encounter deck. If it is a player card, back to that player's deck (the owner, not who controlled it last).