Altar of Dementia + Chalk Outline Combos

3 known combos featuring both cards in Commander

Infinite LTB Infinite ETB Infinite sacrifice triggers Infinite mill Infinite self-mill

Combo 1 with Tortured Existence + Pitiless Plunderer

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite self-discard triggers · Infinite Clue tokens
Steps
  1. Activate Tortured Existence by paying {B} and discarding a creature card, returning another creature card from your graveyard to your hand.
  2. Chalk Outline triggers, creating a creature token.
  3. Activate Altar of Dementia by sacrificing the creature token.
  4. When the creature token dies, Pitiless Plunderer triggers, creating a Treasure token.
  5. Resolve the Altar of Dementia ability.
  6. Activate a Treasure by tapping and sacrificing it, adding {B}.
  7. Repeat.

Combo 2 with Peregrin Took + Cauldron Familiar

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite lifegain triggers · Infinite lifegain · Infinite creature tokens · Infinite lifeloss · Infinite Clue tokens · Infinite card draw · Infinite draw triggers · Infinite Food tokens
Show steps
  1. Activate Altar of Dementia by sacrificing Cauldron Familiar.
  2. Activate Cauldron Familiar by sacrificing a Food, returning Cauldron Familiar to the battlefield from your graveyard.
  3. Cauldron Familiar and Chalk Outline trigger.
  4. Resolve the Chalk Outline trigger, creating a creature token, Clue token and a Food token.
  5. Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
  6. Repeat

Combo 3 with Ygra, Eater of All + Cauldron Familiar

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite mill · Infinite self-mill · Infinite lifegain triggers · Infinite lifegain · Infinite lifeloss · Infinite +1/+1 counters on a creature · Infinite Clue tokens
Show steps
  1. Activate Cauldron Familiar by sacrificing a Food.
  2. Ygra triggers, putting two +1/+1 counters on it.
  3. Resolve the Cauldron Familiar ability, returning it from your graveyard to the battlefield.
  4. Cauldron Familiar and Chalk Outline trigger.
  5. Resolve the Chalk Outline trigger, creating a creature token and a Clue token.
  6. Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
  7. Activate Altar of Dementia by sacrificing Cauldron Familiar.
  8. When Cauldron Familiar dies, Ygra triggers, putting two +1/+1 counters on it.
  9. Resolve the Altar of Dementia ability.
  10. Repeat.
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