Altar of Dementia
Altar of Dementia: Artifact, Modern Horizons. Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power. On Mana Grove.
- Mana cost
- {2}
- Mana value
- 2
- Type
- Artifact
- Colour identity
- Colourless
- Rarity
- Rare
- Set
- Modern Horizons (MH1)
- Released
- 2019-06-14
- Collector number
- 218
- Artist
- Brom
- Commander rank
- 632 (by how often it appears in Commander decks)
- Keywords
- Mill
Build around this card with Grover
About Altar of Dementia
Altar of Dementia is a Magic: The Gathering card, a rare colourless artifact from Modern Horizons (MH1), a draft-focused set released in June 2019. It is collector number 218 in that set, with art by Brom. It costs {2} (two generic mana) to cast, for a mana value of 2. It has no colour identity. It is legal in Modern, Legacy, Vintage, Premodern, Commander, Duel Commander, Oathbreaker, PreDH, Brawl, Historic, Timeless, Gladiator and Penny Dreadful. It has been printed in 4 sets, from Tempest (1997) to The Brothers' War Retro Artifacts (2022). The latest aggregated market price for this printing is $16.91 (normal finish, as of 2026-11-03).
Card text
Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power.
"It is not that you will go mad. It is that you will beg for madness." -Volrath
Market price
Latest aggregated market price for the normal finish of this printing: $16.91 (as of 2026-11-03).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Altar of Dementia by format. Formats in which it is not legal are not listed.
| Modern | Legal |
|---|---|
| Legacy | Legal |
| Vintage | Legal |
| Premodern | Legal |
| Commander | Legal |
| Duel Commander | Legal |
| Oathbreaker | Legal |
| PreDH | Legal |
| Brawl | Legal |
| Historic | Legal |
| Timeless | Legal |
| Gladiator | Legal |
| Penny Dreadful | Legal |
Other printings of Altar of Dementia
Altar of Dementia has been printed in 4 sets. The other printings are listed newest first, with the rarity and release year of each.
| Printing | Rarity | Year |
|---|---|---|
| The Brothers' War Retro Artifacts (BRR) #3 | Mythic | 2022 |
| The Brothers' War Retro Artifacts (BRR) #66 | Mythic | 2022 |
| The Brothers' War Retro Artifacts (BRR) #66z | Mythic | 2022 |
| Conspiracy (CNS) #196 | Rare | 2014 |
| Tempest (TMP) #276 | Rare | 1997 |
Official rulings
Two official rulings apply to Altar of Dementia, newest first.
- The number of cards the target player puts into their graveyard is equal to the power of the sacrificed creature as it last existed on the battlefield.
- If the target player's library contains fewer cards than the sacrificed creature's power, all of those cards are put into that player's graveyard. That player won't lose the game until they try to draw from the empty library.
Similar cards
Other artifact cards with no colour identity, ranked by how often they appear in Commander decks.