Which of You Burns Brightest? #42★
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Card Details
When you set this scheme in motion, you may pay 
. If you do, this scheme deals X damage to target opponent or planeswalker and each creature that player or that planeswalker's controller controls.
“"Let that be a lesson to you, your family, and everyone you've ever known."”
Illustrated by Steve Prescott
Rulings (1)
Jun 15, 2010
You choose the target opponent when the ability triggers. As the ability resolves, you choose a value for X and decide whether to pay . If you do decide to pay , it's too late for any player to respond since the ability is already in the midst of resolving.