無施放費用的牌與覆誦 - 魔法風雲會

查一下Ask the Virtual Judge，用 Djinn Illuminatus 當關鍵字

Q: If I use Djinn Illuminatus to Replicate a card with an X in the cost would
I have to pay X a second time?

A: Yes. The Replicate cost of this spell will be the same as the mana cost of
the original. If you play Fireball with X = 6, then the mana cost and the
Replicate cost for this spell will be 6R. This is because the mana cost of X
spell includes the chosen value of X when the spell is on the stack.

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