『「アルファ版」「ベータ版」「アンリミテッド」』のカード

《セイレーンの呼び声》

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Instant

All of opponent's creatures that can attack must do so. Any non-wall creatures that cannot attack are destroyed at end of turn. Play only during opponent's turn, before opponent's attack. Creatures summoned this turn are unaffected by Siren's Call.

[1E]:U [2E]:U [2U]:U [3E]:U [4E]:U