Arvinox, the Mind Flail
Legendary Enchantment Creature — Horror
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.
- CMC
- 7
- Mana cost
- Color identity
- B
- Rarity
- mythic
- Set
- Universes Within
- Price
- $0.62
- EDHREC rank
- #4693
Arvinox, the Mind Flail lands on the battlefield and immediately puts the whole table's hands into exile face-down, turning every card your opponents drew into a resource you can cast — the disruption is instant and symmetric in the worst possible way for your opponents. The cost is a six-mana body that demands you have the mana to exploit those exiled cards before your opponents can rebuild, and Gonti, Night Minister decks have been the clearest proof that stealing from opponents' resources at scale is a real game plan.
Best Commanders
Commanders with the highest synergy
Gonti, Night Minister
Gonti, Night Minister is built to repeatedly exploit opponents' cards, and Arvinox, the Mind Flail gives that deck a second axis of mass exile that scales with every player at the table — more exiled cards means more triggers, more fuel, and a faster clock.
Tasha, the Witch Queen
Tasha, the Witch Queen rewards casting opponents' instants and sorceries with 3/3 Demon tokens, so Arvinox, the Mind Flail's mass exile of hands turns the entire table's noncreature spells into a token engine the moment they hit the zone.
Aminatou, Veil Piercer
Aminatou, Veil Piercer cares about permanents with the initiative and cards with face-down or hidden-zone interactions, and Arvinox, the Mind Flail's ability to exile multiple cards at once gives that deck a steady stream of opponents' spells to manipulate and exploit.
Xanathar, Guild Kingpin
Xanathar, Guild Kingpin lets you play the top card of each opponent's library, so pairing it with Arvinox, the Mind Flail creates a two-pronged lockout — opponents lose their hand to exile while you're also taxing what they'd draw next.
Rev, Tithe Extractor
Rev, Tithe Extractor generates value whenever opponents lose permanents or resources, and Arvinox, the Mind Flail stripping hands at the start of each combat cycle feeds that engine consistently without needing additional setup.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | not legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Commander is where Arvinox, the Mind Flail lives — a six-mana legendary that exiles every opponent's hand is built for a four-player table where the mass exile scales dramatically and the political fallout of stripping three hands at once is part of the game plan. In Legacy and Vintage, the card is technically legal but competes in formats where six mana buys you game-winning spells and hand disruption is done at one mana with Thoughtseize or Force of Will, so Arvinox never sees play there. Oathbreaker is the one alternative format worth mentioning: as a signature spell target or supporting piece in a two-player-plus game, the hand exile can still generate meaningful advantage, though the smaller life totals mean the game ends before you fully exploit the exiled cards.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.62 bulk tier
At $0.62, Arvinox, the Mind Flail is firmly bulk — a price point that reflects its narrow Commander-specific role and the six-mana cost that keeps it out of competitive eternal formats. It's a stable buy for what it does, but don't expect the price to move unless a new commander archetype emerges that turbocharges hand-exile payoffs.
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Sources
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.