土地でないカード1枚が追放されるまで、あなたのライブラリーの一番上から1枚ずつ追放していく。その呪文のマナ総量が、あなたがコントロールしている山の数よりも少ないなら、そのカードをマナ・コストを支払うことなく唱えてもよい。これによりそのカードを唱えないなら、それをあなたの手札に加える。
フラッシュバック

(あなたの墓地にあるこのカードをフラッシュバック・コストで唱えてもよい。その後、これを追放する。)
If the exiled card has
in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.
If you cast a card "without paying its mana cost," you can't choose to cast it for any alternative costs. You can, however, pay additional costs. If the card has any mandatory additional costs, such as sacrificing a creature, those must be paid to cast the card.
If you wish to cast the exiled card without paying its mana cost, you must cast it while Solstice Revelations is resolving. You can't cast it that way later in the turn. A spell cast this way may be cast at a time you normally wouldn't be able to cast a spell of that type, but other restrictions (such as "Cast this spell only during combat") are enforced.