Cruel Entertainment

The controlling player can use only the resources of the player being controlled (cards, mana, and so on) to pay costs for that player; the controlling player can’t use their own resources to pay costs for the player being controlled. Similarly, the controlling player can’t spend the resources of the player being controlled on any of the controlling player’s own costs.

If one player loses the game before controlling the other player, the other player takes their turn normally.

The player being controlled is still the active player during their turn.

Multiple player-controlling effects that affect the same player overwrite each other. The last one to be created is the one that works.

Controlling a player doesn’t allow the controlling player to look at the controlled player’s sideboard. If an effect instructs that player to choose a card from outside the game, the controlling player can’t have that player choose a card.

While controlling another player, the controlling player makes all choices and decisions that the player being controlled is allowed to make or is told to make during that turn. This includes choices about what spells to cast or what abilities to activate, as well as any decisions called for by a triggered ability or anything else.