Rules glossary
↑ Section 602. Activating Activated Abilities
602.3 Some abilities specify that one of their controller’s opponents does something the controller would normally do while it’s being activated, such as choose a mode or choose targets. In these cases, the opponent does so when the ability’s controller normally would do so.
- 602.3a If there is more than one opponent who could make such a choice, the ability’s controller decides which of those opponents will make the choice.
- 602.3b If the ability instructs its controller and another player to do something at the same time as the ability is being activated, the ability’s controller goes first, then the other player. This is an exception to rule 101.4. (refs: 101.4)