Just encountered this yesterday.
- Player A plays Possession
- Then, it's player B turn (with player A deciding), and there's a Masquerade in the hand.
- Player A decides to play the Masquerade,
- Player A chooses the card to swap in both hands!
- Swapping a province for a curse is so delightful.
But also it seems too much powerful. Am I doing something wrong?
Note that it does not work with 3 players or more, because of the rotation of the swapped cards between the 3 players.