Altar of Dementia + Fool's Demise Combos

5 known combos featuring both cards in Commander

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

Combo 1 with Minn, Wily Illusionist + Phantasmal Dreadmaw

Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Steps
  1. Activate Altar of Dementia by sacrificing another Illusion with power five or greater.
  2. The Illusion dies, triggering Minn's second ability, putting Fool's Demise from your hand onto the battlefield attached to Phantasmal Dreadmaw.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.
  4. Activate Altar of Dementia by sacrificing Phantasmal Dreadmaw.
  5. Phantasmal Dreadmaw dies, triggering Minn's second ability and Fool's Demise's first and second abilities.
  6. Resolve the second Fool's Demise trigger, returning it from your graveyard to your hand.
  7. Resolve the first Fool's Demise trigger, returning Phantasmal Dreadmaw from your graveyard to the battlefield.
  8. Resolve the Minn trigger, putting Fool's Demise from your hand onto the battlefield attached to Phantasmal Dreadmaw.
  9. Resolve the Altar of Dementia ability from step 4, Resolve the Altar of Dementia ability, causing target player to mill cards equal to Phantasmal Dreadmaw's power.
  10. Repeat from step 4.

Combo 2 with Peregrine Drake

Also requires: Peregrine Drake Peregrine Drake
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana lands you control can produce · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count · Infinite untap of lands you control
Show steps
  1. Activate up to five lands by tapping them, adding at least {4}{U}.
  2. Activate Altar of Dementia by sacrificing Peregrine Drake.
  3. Fool's Demise's first and second abilities trigger.
  4. Resolve the first Fool's Demise trigger, returning Peregrine Drake from your graveyard to the battlefield.
  5. When Peregrine Drake enters the battlefield, it triggers, untapping up to five lands.
  6. Resolve the second Fool's Demise trigger, returning Fool's Demise to your hand from your graveyard.
  7. Resolve the Altar of Dementia ability from step 2, causing target player to mill cards equal to Peregrine Drake's power.
  8. Cast Fool's Demise by paying {4}{U}, targeting Peregrine Drake.
  9. Repeat.
  10. If the five lands can tap to produce at least {5}{U}, this combo nets infinite mana.

Combo 3 with Palinchron

Also requires: Palinchron Palinchron
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana lands you control can produce · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count · Infinite untap of lands you control
Show steps
  1. Activate up to seven lands by tapping them, adding at least {4}{U}.
  2. Activate Altar of Dementia by sacrificing Palinchron.
  3. Fool's Demise's first and second abilities trigger.
  4. Resolve the first Fool's Demise trigger, returning Palinchron from your graveyard to the battlefield.
  5. When Palinchron enters the battlefield, it triggers, untapping up to seven lands.
  6. Resolve the second Fool's Demise trigger, returning Fool's Demise to your hand from your graveyard.
  7. Resolve the Altar of Dementia ability from step 2, causing target player to mill cards equal to Palinchron's power.
  8. Cast Fool's Demise by paying {4}{U}, targeting Palinchron.
  9. Repeat.
  10. If the seven lands can tap to produce at least {5}{U}, this combo nets infinite mana.

Combo 4 with Great Whale

Also requires: Great Whale Great Whale
Results: Infinite untap of lands you control · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana lands you control can produce · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count
Show steps
  1. Activate up to seven lands by tapping them, adding at least {4}{U}.
  2. Activate Altar of Dementia by sacrificing Great Whale.
  3. Fool's Demise's first and second abilities trigger.
  4. Resolve the first Fool's Demise trigger, returning Great Whale from your graveyard to the battlefield.
  5. When Great Whale enters the battlefield, it triggers, untapping up to seven lands.
  6. Resolve the second Fool's Demise trigger, returning Fool's Demise to your hand from your graveyard.
  7. Resolve the Altar of Dementia ability from step 2, causing target player to mill cards equal to Great Whale's power.
  8. Cast Fool's Demise by paying {4}{U}, targeting Great Whale.
  9. Repeat.
  10. If the seven lands can tap to produce at least {5}{U}, this combo nets infinite mana.

Combo 5 with Cromat + Minn, Wily Illusionist

Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing Cromat.
  2. Cromat dies, triggering Minn's second ability and Fool's Demise's first and second abilities.
  3. Resolve the second Fool's Demise trigger, returning it from your graveyard to your hand.
  4. Resolve the first Fool's Demise trigger, returning Cromat from your graveyard to the battlefield.
  5. Resolve the Minn trigger, putting Fool's Demise from your hand onto the battlefield attached to Cromat.
  6. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to Cromat's power.
  7. Repeat.
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