精霊術士のパレット {3}

アーティファクト

あなたがマナ・コストに{X}を含む呪文を唱えるたび、精霊術士のパレットの上に蓄積カウンター２個を置く。

{T}：好きな色１色のマナ１点を加える。

{T}：精霊術士のパレットの上に置かれている蓄積カウンター１個につき{C}を加える。このマナは{X}を含むコストにのみ使用できる。

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Only the English version of a Magic card receives Oracle updates and errata. View this card in English. (Scryfall note)
If you cast a spell with multiple {X} mana symbols in its cost, the first ability triggers only once. (2021-04-16)
The mana added by the last ability can be used only to pay costs with at least one {X}, but it can be used to pay for any part of that cost, not just the {X}. That {X} could be in a spell’s total cost, an ability’s activation cost, or a cost you’re asked to pay as a spell or ability resolves. (2021-04-16)

The mana added by the last ability doesn’t all have to spent on the same cost. (2021-04-16)