原文If an artifact has in its mana cost, X is considered to be 0.
訳文アーティファクトのマナ・コストに が含まれる場合、X は 0 とみなされます。
2016/09/20
原文If you don't control an artifact with the highest mana value as your upkeep begins, Padeem's second ability won't trigger. You can't cast an instant to destroy an opponent's artifact during your turn before your upkeep begins.