精神壊しの罠 {2}{U}{U}

インスタント — 罠

このターン、いずれかの対戦相手が３つ以上の呪文を唱えていた場合、あなたは精神壊しの罠のマナ・コストを支払うのではなく、{0}を支払ってもよい。

望む数の呪文を対象とし、それらを追放する。

「人生は迷路だ。行き止まりの一つがこれだ。」 ――タジームの凪魔道士、ノヤン・ダール

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Only the English version of a Magic card receives Oracle updates and errata. View this card in English. (Scryfall note)
You may ignore a Trap's alternative cost condition and simply cast it for its normal mana cost. This is true even if its alternative cost condition has been met. (2009-10-01)
Casting a Trap by paying its alternative cost doesn't change its mana cost or mana value. The only difference is the cost you actually pay. (2009-10-01)
Effects that increase or reduce the cost to cast a Trap will apply to whichever cost you chose to pay. (2009-10-01)

Mindbreak Trap's alternative cost condition checks whether an opponent cast three or more spells this turn, not whether those spells have resolved. (2009-10-01)
If a spell is exiled, it's removed from the stack and thus will not resolve. The spell isn't countered; it just no longer exists. This works on spells that can't be countered, such as Terra Stomper. (2009-10-01)