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先制攻撃、絆魂
このクリーチャーが攻撃するたび、あなたの手札からマナ総量がX以下であるクリーチャー・カード1枚をタップ状態かつ攻撃している状態で戦場に出してもよい。Xは、あなたがコントロールしている攻撃クリーチャーの数に等しい。
If a card in your hand has
in its mana cost, X is 0 for the purpose of determining its mana value.
The value of X is calculated only once, as Kinscaer Sentry's last ability resolves.
You choose the player, planeswalker, or battle the creature you put onto the battlefield is attacking. It doesn't have to attack the same player, planeswalker, or battle as Kinscaer Sentry.
Although the creatures put onto the battlefield with Kinscaer Sentry enter as attacking creatures, they were never declared as attacking creatures. Abilities that trigger whenever a creature attacks won't trigger when the creatures enter attacking.