Altar of Dementia

Altar of Dementia


Sacrifice a creature: Target player puts a number of cards equal to the sacrificed creature's power from the top of his or her library into his or her graveyard.

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Printings View all

Set Rarity
Modern Horizons (MH1) Rare
Conspiracy (CNS) Rare
Tempest (TMP) Rare

Combos Browse all


Format Legality
Tiny Leaders Legal
Noble Legal
Magic Duels Legal
Canadian Highlander Legal
Vintage Legal
Modern Legal
Highlander Legal
2019-10-04 Legal
Block Constructed Legal
Leviathan Legal
Legacy Legal
1v1 Commander Legal
Duel Commander Legal
Oathbreaker Legal
Unformat Legal
Casual Legal
Commander / EDH Legal

Altar of Dementia occurrence in decks from the last year

Commander / EDH:

All decks: 0.04%

Black: 0.2%

Golgari: 0.14%

Altar of Dementia Discussion

Jhi69 on Muldrotha, Lady of the Swamp

3 hours ago

Bisher habe ich durch Mill der Gegner oder durch mich selbst via Jace, Wielder of Mysteries gewonnen.

Ebenfalls ist es möglich mit Hilfe von unendlich Mana durch Torment of Hailfire oder Villainous Wealth zu gewinnen.

Um auf Nummer sicher zu gehen fahre ich noch eine Combo mit Mikaeus, the Unhallowed + Triskelion / Walking Ballista + Altar of Dementia Damit kann ich durch Schaden oder Mill des Gegners gewinnen.

Kaya's Ghostform fahre ich in meinem ursprünglichen Deck und habe sehr viel gute Erfahrungen gemacht. Allerdings ist es ohne LED doch irgendwie recht schwierig mit Muldrotha

Sauluz on Orzhov Vampire Tribal

1 day ago

Alright, so i have some spare time currently and will try to give you some more advice.

Possible Cuts:

Dead Man's Chest - Funny card, but not really on theme with your deck as far as i can see

Path of Bravery - Does to little imo, but i have never seen it in play, so it may overperform

Skymarcher Aspirant - Even if you have ascent, its only a 2/1 flyer for one mana

Paladin of Atonement - Same reasoning as for Path of Bravery

Bloodcrazed Paladin - The fact that it does not have trample makes it a lot worse than one might think

Queen's Commission - Not a bad card, but one of the weaker ones imo


Exchange Forsaken Sanctuary with Orzhov Basilica Exchange a Plains with Castle Ardenvale If you can, insert more dual lands that can enter the battlefield untapped, e.g. Caves of Koilos


I think you are running too few sacrifice outlets, especially since you are a vampire tribal and need creatures to die for your commander. You already have Yahenni, Undying Partisan, but there are also Viscera Seer, Ashnod's Altar, Phyrexian Altar, Altar of Dementia, Blood Bairn, Anowon, the Ruin Sage, Gatekeeper of Malakir, Indulgent Aristocrat, Voldaren Pariah  Flip and Bloodthrone Vampire (No particular oder, but free sac outlets like Viscera Seer are great!)

Now that stuff is dying, Butcher of Malakir and Dictate of Erebos are really great.


I really like your deck idea and think that you already are on a great way. If i were you i would abondon the life gain theme and focus more on being an aristocrat deck since your commander heavily suggest you to do so (and also because it is really powerful), but i guess lifegain is more flavourfull with Vampires :)

Good luck with your deck!

SteelSentry on Karametras Win Cons

4 days ago

Having big creatures is a pretty viable win condition, especially since G/W has a variety of tools to protect a big army. Those colors have a lot of incidental life gain, and Karametra makes a lot of mana, so Aetherflux Reservoir can take out one or two players easily.

As for combos in those colors, Reveillark and Karmic Guide with a sacrifice outlet can infinitely sacrifice and recur a 2 power creature, and you can also get infinite sacrifice triggers with Sun Titan and either Saffi Eriksdotter or Angelic Renewal. Common sacrifice outlets are Altar of Dementia or Blasting Station to win on the spot, or either of the mana altars to make infinite mana.

With all the lands out of your deck, a big X spell or a land animation effect like Jolrael, Empress of Beasts can also close out the game.

SueMe on Hogaak: My Favorite (Infinite) Combo Deck

6 days ago

Did I say Ashnod's Altar? I meant Altar of Dementia. Anyways...

That's cool! I've dipped my toes in the Inspired mechanic a little bit with King Macar, the Gold-Cursed, but I never checked Scryfall for all the potential Inspiring creatures. I think Pain Seer is definitely worth a try. Budget Bob is nothing to scoff at. It's cheap, it's a creature and it draws. That's what this deck needs.

Thanks man! Now, that you mention it, I'll put Dark Confidant in the Maybeboard for anyone who has the cash. Awesome stuff!

StopShot on Is this infinite combo tournament ...

6 days ago

Hello, I have an infinite combo where all the cards are legal, but I don't know if using the combo itself is legal.

My combo uses: Swift Warkite + Pulsemage Advocate + Altar of Dementia

The combo works by casting Swift Warkite whose ETB puts Pulsemage Advocate onto the battlefield with haste. I then sacrifice Swift Warkite to Altar of Dementia to mill an opponent by four cards. I can then activate Pulsemage Advocate's ability to return three of those cards to my opponent's hand to return the Swift Warkite to the battlefield. While that ability is on the stack I'll then sacrifice the Pulsemage Advocate to the Altar of Dementia so that my opponent mills one card, and so that when Swift Warkite re-enters the battlefield I can return the Pulsemage Advocate back to the battlefield and repeat however many times I like until my opponents no longer have any cards in their libraries.

But what do I mean when I ask is this combo legal? Let me demonstrate a simple combo to better explain what I mean. Take this as an example: Deceiver Exarch + Splinter Twin

Deceiver Exarch is enchanted with Splinter Twin. By tapping Deceiver Exarch I can produce a token copy of it which also makes an ETB trigger. I can use this trigger to untap the enchanted Deceiver Exarch so that I can use its ability again and again and again until I have infinite Exarch tokens. Since Splinter Twin gives the tokens haste I can swing for lethal damage on my next combat step to win the game.

When it comes to infinite combos you don't need to play them out in detail, describing the process over and over again. So long as you can demonstrate the first loop you can shortcut to any arbitrary number of cycles so that you won't be penalized for slow play. The Deceiver Exarch + Splinter Twin combo is a notable example where this rule applies as it would probably take 10+ minutes in a commander setting just to demonstrate a necessary number of cycles needed to produce enough tokens to win the game.

I'm wanting to know if my infinite combo can use the same shortcut principle as the Deceiver Exarch + Splinter Twin combo. Obviously, I can demonstrate a single cycle that puts me back where I was before, except my opponent now has 5 less cards in their library. The only issue is each time this combo makes a cycle I must put three cards into my opponent's hand. The issue with this is, there's a possibility I could put an instant-speed artifact-removal or graveyard-hate spell into their hand halfway through the combo giving my opponent the ability to counteract the combo before I have fully milled their library. (Creature removal can't stop this combo.) Because of this possibility I feel my opponents have a reasonable argument to make in asking that I play the combo out cycle-by-cycle rather than shortcut to the end.

Because Commander is a multiplayer 100-card format I feel that if I were to play out this combo, cycle-by-cycle, it would take too long to do and thus this infinite combo wouldn't be legal to use in a tournament setting. Is it possible to shortcut with my combo or not?

DadHumanPraetor on Grand Theft Magic

1 week ago

Yeah I noticed a couple of the combos. I LOVE the bombardment combo, that looks like a rage quit combo to me haha, this deck looks super fun. I like the kind of decks where you can include combos, but not depend on them. I typically use Altar of the Brood instead of Altar of Dementia, but run lots of 3 or 4 piece ashnods/phyrexian altar shenanigans in my Meren and Ayara decks using all the usual suspects like Tenacious Dead Bloodsoaked Champion and the other crawlers with Pitiless Plunderer and Pawn of Ulamog. The combos dont need to go off to play or win, but they sure are fun to brew up!

Enral on Skull & Bones | Ayli & Lurrus

2 weeks ago

BlackWas: Dreadhorde synergizes with several elements of the deck including Gravecrawler and Cryptbreaker. It also provides lifelink (when the game drags on) which is very relevant in the deck. Altar of the Brood is definitely on my radar as well as Altar of Dementia.

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