Flameblast Dragon
Creature — Dragon
Flying
Whenever this creature attacks, you may pay 
. If you do, it deals X damage to any target.
He marks his territory with fire and wrath, etching the mountainside with his charring breath.
Jaime Jones
Rulings
You choose the target when the ability triggers. When the ability resolves, you choose a value for X and decide whether to pay {X}{R}. If you do decide to pay {X}{R}, it's too late for any player to respond since the ability is already in the midst of resolving.
(wotc • 2008-10-01)
Rulings
You choose the target when the ability triggers. When the ability resolves, you choose a value for X and decide whether to pay {X}{R}. If you do decide to pay {X}{R}, it's too late for any player to respond since the ability is already in the midst of resolving.
(wotc • 2008-10-01)