Molten Disaster

Kicker {R} (You may pay an additional {R} as you cast this spell.)If Molten Disaster was kicked, it has split second. (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)Molten Disaster deals X damage to each creature without flying and each player.

Kicker {R} (You may pay an additional {R} as you cast this spell.)
If this spell was kicked, it has split second. (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Molten Disaster deals X damage to each creature without flying and each player.

Kicker {R} (You may pay an additional {R} as you play this spell.)
If the kicker cost was paid, Molten Disaster has split second. (As long as this spell is on the stack, players can't play spells or activated abilities that aren't mana abilities.)
Molten Disaster deals X damage to each creature without flying and each player.

Commander 2013

Modern Masters

Kicker {R} (You may pay an additional {R} as you cast this spell.)
If Molten Disaster was kicked, it has split second. (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Molten Disaster deals X damage to each creature without flying and each player.