焼却の機械巨人
アーティファクト・クリーチャー — 構築物
先制攻撃
焼却の機械巨人が戦場に出たとき、対戦相手１人を対象とする。そのプレイヤーは「あなたはカード３枚を引く。」を選んでもよい。そうしないなら、あなたはカード３枚を切削し、その後、焼却の機械巨人はそのプレイヤーに、それらのカードのマナ総量の合計に等しい点数のダメージを与える。
Illustrated by
Modern Horizons 3 Commander#210MythicJapaneseLegality
Rulings
If any of the cards put into your graveyard have 
in their mana cost, X is considered to be 0.
If you have fewer than three cards in your library, the opponent may choose to have you draw three cards. If so, you’ll lose the game as state-based actions are performed.
While Combustible Gearhulk’s triggered ability is resolving, no player may take any actions other than those specified by the Gearhulk. Once the opponent makes a choice, players can’t cast spells or activate abilities until after the cards are drawn or put into the graveyard and damage has been dealt (if applicable).