Master of Diversion

Oracle Text

Whenever Master of Diversion attacks, tap target creature defending player controls.

Card Rulings

7/1/2013 The ability will resolve and the creature will become tapped before blocking creatures are declared.
7/1/2013 In a Two-Headed Giant game, any creature controlled by a member of the defending team can be chosen as the target.
7/1/2013 In other multiplayer formats, including Commander, only a creature controlled by the defending player Master of Diversion is attacking can be chosen as the target, even if your other attacking creatures are attacking different players.