cr:6.6.6b

If two or more triggered-layers would have been created, the turn-player selects a player, then each player in clockwise order adds all pending triggered-layers they control onto the stack in an order they choose, starting with the selected player.

Example: Celestial Kimono has the text “. . . when this . . . is destroyed, gain {r},” and Diadem of Dreamstate has the text “. . . when this . . . is destroyed, you may pay {r}. If you do, create a Ponder token.” If both cards are destroyed, the controlling player may choose to order their trigger-layers so they gain {r} from Celestial Kimono before paying {r} for Diadem of Dreamstate, even if they are not the turn-player.