Altar of Dementia + Gravecrawler Combos

10 known combos featuring both cards in Commander

Infinite death triggers Infinite ETB Infinite LTB Infinite mill Infinite sacrifice triggers

Combo 1 with Pitiless Plunderer

Also requires: Pitiless Plunderer Pitiless Plunderer
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count
Steps
  1. Activate Altar of Dementia by sacrificing Gravecrawler.
  2. When Gravecrawler dies, Pitiless Plunderer triggers, creating a Treasure token.
  3. Resolve the Altar of Dementia ability.
  4. Activate the Treasure token by tapping and sacrificing it, adding {B}.
  5. Cast Gravecrawler from your graveyard by paying {B}.
  6. Repeat.
7,635 decks Colorless View on Commander Spellbook →

Combo 2 with Rooftop Storm

Also requires: Rooftop Storm Rooftop Storm
Results: Infinite death triggers · Infinite self-mill · Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite storm count
Show steps
  1. Activate Altar of Dementia by sacrificing Gravecrawler.
  2. Cast Gravecrawler from your graveyard by paying {0}.
  3. Repeat.
6,328 decks Colorless View on Commander Spellbook →

Combo 3 with Kheru Goldkeeper

Also requires: Kheru Goldkeeper Kheru Goldkeeper
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite storm count
Show steps
  1. Cast Gravecrawler from your graveyard by paying {B}.
  2. Kheru Goldkeeper triggers, creating a Treasure token.
  3. Activate Altar of Dementia by sacrificing Gravecrawler.
  4. Activate the Treasure by tapping and sacrificing it, adding {B}.
  5. Repeat.
3,688 decks Colorless View on Commander Spellbook →

Combo 4 with K'rrik, Son of Yawgmoth + Pontiff of Blight

Results: Infinite +1/+1 counters on a creature · Infinite death triggers · Infinite ETB · Infinite lifegain · Infinite lifegain triggers · Infinite lifeloss · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count
Show steps
  1. Activate Altar of Dementia by sacrificing Gravecrawler, causing target player to mill cards equal to its power.
  2. Cast Gravecrawler from your graveyard by paying {B} or 2 life due to K'rrik.
  3. K'rrik triggers, as well as each creature you control's extort ability.
  4. Resolve the first K'rrik trigger, putting a +1/+1 counter on it.
  5. Resolve the first extort trigger, causing you to pay {W/B} or 2 life due to K'rrik, causing each opponent to lose 1 life and you to gain that much life.
  6. Repeat step 5 for each remaining trigger.
  7. Repeat from step 1.

Combo 5 with Defiler of Flesh + Aetherflux Reservoir

Results: Infinite damage · Infinite death triggers · Infinite ETB · Infinite lifegain · Infinite lifegain triggers · Infinite LTB · Infinitely large creatures you control until end of turn · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count
Show steps
  1. Activate Altar of Dementia by sacrificing Gravecrawler, causing target player to mill cards equal to Gravecrawler's power.
  2. Cast Gravecrawler from your graveyard by paying 2 life.
  3. Aetherflux Reservoir and Defiler of Flesh trigger.
  4. Resolve the Aetherflux Reservoir trigger, causing you to gain 1 life for each spell you've cast this turn.
  5. Resolve the Defiler of Flesh trigger, giving target creature +1/+1 and menace until end of turn.
  6. Repeat.
  7. Once you have infinite life, you may activate Aetherflux Reservoir's ability to deal infinite damage to any target(s).

Combo 6 with Celes, Rune Knight + Crystalline Crawler

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite storm count · Infinite +1/+1 counters on most creatures you control
Show steps
  1. Cast Gravecrawler from your graveyard by paying {B}.
  2. When Gravecrawler enters the battlefield, Celes's second ability triggers, putting a +1/+1 counter on each creature you control.
  3. Activate Altar of Dementia by sacrificing Gravecrawler.
  4. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding {B}.
  5. Repeat.

Combo 7 with Merrow Bonegnawer + Paradise Mantle

Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count
Show steps
  1. Activate Merrow Bonegnawer by tapping it, adding {B}.
  2. Activate Altar of Dementia by sacrificing Gravecrawler, causing target player to mill cards equal to Gravecrawler's power.
  3. Cast Gravecrawler by paying {B}.
  4. Merrow Bonegnawer triggers, untapping itself.
  5. Repeat.

Combo 8 with Bhaal, Lord of Murder + Crystalline Crawler

Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count
Show steps
  1. Activate Altar of Dementia by sacrificing Gravecrawler.
  2. When Gravecrawler dies, Bhaal triggers, putting a +1/+1 counter on Crystalline Crawler.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Gravecrawler's power.
  4. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding {B}.
  5. Cast Gravecrawler from your graveyard by paying {B}.
  6. Repeat.

Combo 9 with Szarel, Genesis Shepherd + Crystalline Crawler

Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite storm count · Infinite +1/+1 counters on creatures you control
Show steps
  1. Cast Gravecrawler from your graveyard by paying its mana cost.
  2. Activate Altar of Dementia by sacrificing Gravecrawler.
  3. When Gravecrawler is sacrificed, Szarel triggers, putting a number of +1/+1 counters equal to Szarel's power on Crystalline Crawler.
  4. Resolve the Altar of Dementia ability.
  5. Activate Crystalline Crawler by removing a +1/+1 counter from it, adding {B}.
  6. Repeat.

Combo 10 with The Thirteenth Doctor + Crystalline Crawler

Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count
Show steps
  1. Activate Altar of Dementia by sacrificing Gravecrawler, causing target player to mill cards equal to Gravecrawler's power.
  2. Cast Gravecrawler from your graveyard by paying {B}.
  3. The Thirteenth Doctor's first ability triggers, putting a +1/+1 counter on Crystalline Crawler.
  4. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding {B}.
  5. Repeat.
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