Possession
Set:
Alchemy
Type:
Action 
Cost:
6 Requires potion:
Requires potion to purchase
The player to your left takes an extra turn after this one, in which you can see all cards he can and make all decisions for him.
Any cards he would gain on that turn, you gain instead; any cards of his that are trashed are set aside and returned to his discard pile at end of turn.