Delvefall
Muddle the Mixture

Muddle the Mixture {U}{U}

Instant

Counter target instant or sorcery spell.
Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

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extra filters

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Cards that do something similar expected a card that isn't here?

Spellshift
Spellshift 93%
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"Counter target instant or sorcery spell. Its controller reveals cards from the top of their library until they reveal an instant or sorcery card. That player may cast that card without paying its mana cost. Then the player shuffles."
Quash
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"Counter target instant or sorcery spell. Search its controller's graveyard, hand, and library for all cards with the same name as that spell and exile them. Then that player shuffles."
Test of Talents
Test of Talents 91%
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"Counter target instant or sorcery spell. Search its controller's graveyard, hand, and library for any number of cards with the same name as that spell and exile them. That player shuffles, then draws a card for each card exiled from their hand this way."
Molten Influence
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"Counter target instant or sorcery spell unless its controller has this card deal 4 damage to them."
Flusterstorm
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"Counter target instant or sorcery spell unless its controller pays {1}."
Disrupt
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"Counter target instant or sorcery spell unless its controller pays {1}."
Psychic Rebuttal
Psychic Rebuttal 86%
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"Counter target instant or sorcery spell that targets you."
Grozoth
Grozoth 100%
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"Transmute {1}{U}{U}"
Dizzy Spell
Dizzy Spell 100%
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"Transmute {1}{U}{U}"
Tolaria West
Tolaria West 100%
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"Transmute {1}{U}{U}"
Ethereal Usher
Ethereal Usher 100%
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"Transmute {1}{U}{U}"
Drift of Phantasms
Drift of Phantasms 100%
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"Transmute {1}{U}{U}"
Miscast
Miscast 85%
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"Counter target instant or sorcery spell unless its controller pays {3}."
Swan Song
Swan Song 83%
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"Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying."