Magic: The Gathering

Altar of Dementia

The Brothers' War Retro Artifacts 66z • mythic

Set: The Brothers' War Retro Artifacts
Collector number: 66z
Rarity: Mythic
Mana cost: 2 generic mana
Type: Artifact
Colors: Colorless
Artist: Isis
Finish: Foil

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$699.99est. via TCGplayer

104,743cards tracked

5other printings of this card

Market

What it's worth

$699.99market price via TCGplayer · Aug 21, 2026

Estimate for a typical copy of Altar of Dementia; condition, printing, and grading move the real number.

Lore

Why it matters

As a mythic rarity from the retro artifacts series, this card represents a significant piece of mechanical history within the game. Its ability to sacrifice creatures to mill an opponent offers a distinct strategic path, making it a highly sought-after utility piece for players who favor graveyard-focused synergies.

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Card face

What it does

Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power.

"My dreams have brought more visions from our master: an altar, exquisite and perfect. We must build it at once."— Writings of Artonac, priest of Gix

Formats

Where you can play it

StandardNot legal
PioneerNot legal
ModernLegal
LegacyLegal
VintageLegal
CommanderLegal
PauperNot legal
BrawlLegal
HistoricLegal
TimelessLegal
Penny DreadfulLegal
OathbreakerLegal

Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC. Card text via Scryfall. Not approved or endorsed by Wizards. As of the last catalogue refresh.

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Where to find one

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Provenance

Where it came from

Altar of Dementia was originally printed in the 1990 Tempest expansion, conceived as a strategic tool for graveyard-focused strategies in the Magic: The Gathering trading card game. Its design centers on the mechanic of self-mill, allowing players to sacrifice their own creatures to force an opponent to discard cards from their library, effectively weaponizing the graveyard rather than viewing it as a terminal state.

The version from The Brothers' War Retro Artifacts set features a stylized, schematic-inspired aesthetic designed to evoke the high-fantasy industrial lore of the game's setting. By reprinting this classic artifact in a frame reminiscent of the game's early history, the designers aimed to honor the card's enduring legacy as a cornerstone of combo-based play and graveyard manipulation, garnering a warm reception from long-term players who appreciate both its mechanical versatility and its historical context.

Generated by Pi, the collecto.rs collecting companion

Other printings

Every version of this card

The same card, printed again — different sets, treatments, and prices.

Collectors

Who's collecting this

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About

About Altar of Dementia

Altar of Dementia is a card in the Magic: The Gathering catalog on collecto.rs. The Brothers' War Retro Artifacts 66z • mythic. Catalog data is sourced from Scryfall. No public cards collectors track this one yet — adding yours would make you the first on collecto.rs.

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Where does the Altar of Dementia catalog entry come from?

The catalog entry for Altar of Dementia is sourced from Scryfall. Catalog-level facts stay consistent across every collector; your own data (condition, edition, acquisition notes) is yours.