Flameblast Dragon
Creature — Dragon
Flying
Whenever this creature attacks, you may pay 
. If you do, it deals X damage to any target.
Dragon lords of Jund rule by edicts of flame.
Jaime Jones
Archenemy (ARC)
• #38Rulings
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)