First printed in Tempest (1997)
All 6 prints
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The Brothers' War Retro Artifacts (BRR) #3, 2022
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The Brothers' War Retro Artifacts (BRR) #66, 2022
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The Brothers' War Retro Artifacts (BRR) #66z, 2022
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Modern Horizons (MH1) #218, 2019
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Conspiracy (CNS) #196, 2014
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Tempest (TMP) #276, 1997
Altar of Dementia 
Artifact
Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power.
In the last 30 days 0.4% of Legacy decks played it (1 of 264). Most played in BRG (unclassified). In the last 30 days 0.7% of Premodern decks played it (1 of 137). Most played in WURG (unclassified).
Staple
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Commander staples:
main deck, 3% of decks (#491)
Colorless, Artifacts
Last 120 days of MTGO results and paper tournaments.
Legality
Constructed
- Standard Not legal
- Pioneer Not legal
- Modern Legal
- Legacy Legal
- Vintage Legal
- Pauper Not legal
- Future Standard Not legal
- Historic Legal
- Timeless Legal
- Alchemy Not legal
- Penny Dreadful Legal
- Premodern Legal
- Old School 93/94 Not legal
Singleton
- Gladiator Legal
Commander formats
- Commander Legal
- Duel Commander Legal
- Pauper Commander Not legal
- PreDH Legal
- Tiny Leaders Legal
- Oathbreaker Legal
- Brawl Legal
- Standard Brawl Not legal
- Competitive Brawl Legal
