Chalk Outline + Yahenni, Undying Partisan Combos

3 known combos featuring both cards in Commander

Infinite LTB Infinite ETB Infinite sacrifice triggers Infinite Clue tokens Infinite death triggers

Combo 1 with Peregrin Took + Cauldron Familiar

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite lifegain triggers · Infinite lifegain · Infinite creature tokens · Infinite lifeloss · Infinite Clue tokens · Infinite card draw · Infinite draw triggers · Infinite Food tokens
Steps
  1. Activate Yahenni 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 2 with Tortured Existence + Pitiless Plunderer

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite self-discard triggers · Infinite Clue tokens
Show 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 Yahenni by sacrificing the creature token.
  4. When the creature token dies, Pitiless Plunderer triggers, creating a Treasure token.
  5. Resolve the Yahenni ability.
  6. Activate a Treasure by tapping and sacrificing it, adding {B}.
  7. Repeat.

Combo 3 with Ygra, Eater of All + Cauldron Familiar

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · 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 Yahenni by sacrificing Cauldron Familiar.
  8. When Cauldron Familiar dies, Ygra triggers, putting two +1/+1 counters on it.
  9. Resolve the Yahenni ability.
  10. Repeat.
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