Altar of Dementia + Phantasmal Image Combos

4 known combos featuring both cards in Commander

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

Combo 1 with Cavalier of Night

Also requires: Cavalier of Night Cavalier of Night
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Steps
  1. Activate Altar of Dementia by sacrificing Phantasmal Image.
  2. When Phantasmal Image dies, its last ability from Cavalier of Night triggers, returning itself from your graveyard to the battlefield as a copy of Cavalier of Night.
  3. When Phantasmal Image enters the battlefield, its first triggered ability from Cavalier of Night triggers; choose not to sacrifice a creature.
  4. Resolve the Altar of Dementia ability from step 1.
  5. Repeat.

Combo 2 with Vesperlark

Also requires: Vesperlark Vesperlark
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 Phantasmal Image.
  2. When Phantasmal Image dies, it triggers, returning itself from your graveyard to the battlefield as a copy of Vesperlark.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Phantasmal Image's power.
  4. Repeat.

Combo 3 with Driver of the Dead

Also requires: Driver of the Dead Driver of the Dead
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 Phantasmal Image.
  2. When Phantasmal Image dies, it triggers, returning itself from your graveyard to the battlefield as a copy of Driver of the Dead.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Phantasmal Image's power.
  4. Repeat.

Combo 4 with Magnanimous Magistrate + Phyrexian Metamorph

Results: Infinite blinking of creatures on the battlefield and creature cards in graveyard and in library · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing Phantasmal Image.
  2. Magnanimous Magistrate and Phyrexian Metamorph trigger.
  3. Resolve one trigger, removing two reprieve counters from a creature and returning Phantasmal Image from your graveyard to the battlefield as a copy of Magnanimous Magistrate.
  4. Resolve the other trigger, declining to act.
  5. Activate Altar of Dementia by sacrificing Phyrexian Metamorph.
  6. Magnanimous Magistrate and Phantasmal Image trigger.
  7. Resolve Phantasmal Image's trigger, removing four reprieve counters from it and returning Phyrexian Metamorph from your graveyard to the battlefield as a copy of Magnanimous Magistrate.
  8. Resolve the other trigger, declining to act.
  9. Repeat any number of times.
  10. Resolve all Altar of Dementia abilities, milling any number of players any amount of cards.
  11. You may sacrifice and return any number of creatures in your graveyard any number of times.
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