Fall of the Titans
Instant
Surge (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.)
Fall of the Titans deals X damage to each of up to two targets.
As Gideon kept the brood lineages at bay, Chandra incinerated the bound Eldrazi titans.
イラスト：
Oath of the Gatewatch Promos#109sレア英語適正
裁定
Fall of the Titan’s converted mana cost is based on its mana cost of , even if you’re casting it for its surge cost. For example, if you cast Fall of the Titans for its surge cost and choose 4 for X, its converted mana cost will be 9.
For some cards, surge represents only an alternative cost, a discount that applies if you or a teammate has cast another spell this turn. Other cards, like Reckless Bushwhacker, have additional abilities or effects if you paid the surge cost to cast the spell.
The other spell that you or a teammate cast can be one that’s resolved, one that was countered, or (for instants with surge) one that’s still on the stack.
If an instant or sorcery spell cast for its surge cost is copied, the copy is also considered to have had its surge cost paid.
Casting a spell for its surge cost doesn’t change its mana cost or its converted mana cost.