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Arvinox isn't a creature unless you control three or more permanents you don't own. At the beginning of your end step, exile the bottom card of each opponent's library face down. For as long as those cards remain exiled, you may look at them, you may cast permanent spells from among them, and you may spend mana as though it were mana of any color to cast those spells.
Abilities, attacks, weakness & resistance
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Arvinox, the Mind Flail (SLD-340) is a legendary enchantment creature Horror from the Secret Lair Drop set. It only becomes a creature if you control three or more permanents you don't own and exiles the bottom card of each opponent’s library at your end step, letting you look at and cast permanent spells from among those exiled cards using mana of any color. Its name is treated the same as Mind Flayer, the Shadow for rules and deck construction purposes.
Catalog pricing data as of 28 Apr 2026, 09:33