Thrumiss, Zephyr Guardian/Rulings


 * Q: With Thrumiss in play, you choose and designate a target to attack. You now get to choose one of your opponent's creatures to tap. If your opponent has a blocker on the field, and you choose that blocker to tap, does your opponent get to block your creatures attack with that blocker before the blocker gets tapped by Thrumiss' ability?
 * A: No. Your opponent's creature is tapped before it can block your creatures attack and therefore it cannot block because it is tapped.