Mnemonic Betrayal
Sorcery
Exile all opponents' graveyards. You may cast spells from among those cards this turn, and mana of any type can be spent to cast them. At the beginning of the next end step, if any of those cards remain exiled, return them to their owners' graveyards.
Exile Mnemonic Betrayal.
- CMC
- 3
- Mana cost
- Color identity
- BU
- Rarity
- mythic
- Set
- Guilds of Ravnica
- Price
- $9.58
- EDHREC rank
- #2249
Mnemonic Betrayal hands you every spell in every opponent's graveyard until end of turn — cast them all, exile them, and if you used Immortal Coil to pay the cost, you've got a near-free engine that strips resources while building your own. The ceiling is enormous in any multiplayer game with deep graveyards, and Rograkh, Son of Rohgahh // Silas Renn, Seeker Adept exploits it better than almost anyone else.
Best Commanders
Commanders with the highest synergy
Rograkh, Son of Rohgahh // Silas Renn, Seeker Adept
Silas Renn's ability to cast artifacts from graveyards stacks directly with Mnemonic Betrayal's window, letting you double-dip on opponents' artifact-heavy piles while the equipment package in that shell makes the whole theft feel trivial to execute.
Tasha, the Witch Queen
Tasha, the Witch Queen creates Demon tokens whenever opponents cast instants or sorceries you don't own — and Mnemonic Betrayal fills your turn with exactly those spells, generating a token for every opponent's instant or sorcery you fire off.
Talion, the Kindly Lord
Talion, the Kindly Lord punishes opponents every time a chosen number appears on a spell, and Mnemonic Betrayal casting a stack of their own spells triggers that drain repeatedly in a single turn.
Malcolm, Keen-Eyed Navigator // Vial Smasher the Fierce
Vial Smasher the Fierce deals damage equal to a spell's mana value whenever you cast the first spell each turn, and Mnemonic Betrayal — itself a three-mana spell with a potentially backloaded cost — followed by a wave of expensive opponent spells turns that trigger into a finishing blow.
Kefka, Court Mage
Kefka, Court Mage cares about casting noncreature spells and punishing opponents' resources, and Mnemonic Betrayal delivers a burst of exactly that while draining the graveyards that opponents were counting on for their own late-game plans.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Mnemonic Betrayal is where Commander is its natural home — four players means three graveyards to raid, and a single resolved copy can cast a dozen spells in one turn against the right table. In Legacy and Vintage, the card is legal but the payoff doesn't map well to 1v1 games where graveyards are smaller and faster answers are everywhere. Modern and Pioneer are the same story: Mnemonic Betrayal costs three mana to cast and more to use, and in those formats your opponent has already won or lost before the graveyard gets deep enough to matter. Stick to Commander and Oathbreaker, where the multiplayer math makes the card legitimately broken in the right shell.
Key Combos
Combo lines featuring this card
Immortal CoilFractured IdentityMnemonic Betrayal
Each opponent loses the game
View on Commander Spellbook ↗Budget Alternatives
Cheaper options that do most of the same work
Spelltwine does a narrower version — one instant or sorcery from each graveyard for six mana — and sits well under a dollar, making it a reasonable placeholder if you want the flavor without the price tag. Diluvian Primordial is the creature version at seven mana, hitting one spell per opponent's graveyard at a rate closer to Mnemonic Betrayal's ceiling, though it trades instant-speed flexibility for a body that can be removed before you untap.
Price Context
Current price
$9.58 mid tier
At $9.58, Mnemonic Betrayal sits in the mid tier — expensive enough to feel like a deliberate include, cheap enough that it belongs in any serious Dimir or Grixis spellslinger list without breaking the budget. It's a mythic with a narrow but enthusiastic audience, so the price is stable rather than climbing.
Explore
Sources
Mentioned
- Immortal Coil
- Rograkh, Son of Rohgahh // Silas Renn, Seeker Adept
- Tasha, the Witch Queen
- Talion, the Kindly Lord
- Malcolm, Keen-Eyed Navigator // Vial Smasher the Fierce
- Kefka, Court Mage
- Fractured Identity
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.