Panicked Bystander // Cackling Culprit + Yawgmoth, Thran Physician Combos

3 known combos featuring both cards in Commander

Near-infinite lifegain triggers Near-infinite ETB Near-infinite LTB Near-infinite death triggers Near-infinite sacrifice triggers

Combo 1 with Nest of Scarabs

Also requires: Nest of Scarabs Nest of Scarabs
Results: Near-infinite lifegain triggers · Near-infinite ETB · Near-infinite LTB · Near-infinite death triggers · Near-infinite sacrifice triggers · Near-infinite card draw · Near-infinite draw triggers · Near-infinite -1/-1 counters
Steps
  1. Activate Yawgmoth by paying 1 life and sacrificing another creature.
  2. When the creature dies, Panicked Bystander // Cackling Culprit triggers, causing you to gain 1 life.
  3. Resolve the Yawgmoth ability, putting a -1/-1 counter on any other creature and causing you to draw a card.
  4. If the creature who had the counter placed has 0 toughness, it dies as a state-based action.
  5. Nest of Scarabs triggers, creating a 1/1 Insect creature token.
  6. Repeat until your opponents do not control any more creatures, or until you draw your library.
  7. If you have cards remaining in your library, you may repeat this combo any time a creature enters the battlefield under an opponent's control.

Combo 2 with Scurry Oak

Also requires: Scurry Oak Scurry Oak
Results: Infinite card draw · Infinite draw triggers · Near-infinite death triggers · Near-infinite ETB · Near-infinite lifegain triggers · Near-infinite LTB · Near-infinite sacrifice triggers
Show steps
  1. Cast Yawgmoth by paying {2}{B}{B}.
  2. When Yawgmoth enters the battlefield, Scurry Oak's evolve ability triggers.
  3. Holding priority, activate Yawgmoth by paying 1 life and sacrificing a creature.
  4. When the creature dies, Panicked Bystander triggers, causing you to gain 1 life.
  5. Resolve the Yawgmoth ability, putting a -1/-1 counter on Scurry Oak and causing you to draw a card.
  6. Resolve the Scurry Oak trigger, putting a +1/+1 counter on it, triggering Scurry Oak's second ability.
  7. Holding priority, activate Yawgmoth by paying 1 life and sacrificing a creature.
  8. When the creature dies, Panicked Bystander triggers, causing you to gain 1 life.
  9. Resolve the Yawgmoth ability, putting a -1/-1 counter on Scurry Oak and causing you to draw a card.
  10. Resolve the Scurry Oak trigger, creating a 1/1 Squirrel creature token.
  11. When the Squirrel enters the battlefield, Scurry Oak's evolve ability triggers.
  12. Repeat from step 6.

Combo 3 with The Locust God

Also requires: The Locust God The Locust God
Results: Infinite card draw · Near-infinite lifegain triggers · Near-infinite ETB · Infinite draw triggers · Near-infinite LTB · Near-infinite death triggers · Near-infinite sacrifice triggers · Near-infinite -1/-1 counters
Show steps
  1. Activate Yawgmoth's first ability by paying 1 life and sacrificing another creature.
  2. When the creature dies, Panicked Bystander // Cackling Culprit triggers, causing you to gain 1 life.
  3. Resolve the Yawgmoth ability, causing you to draw a card and allowing you to put a -1/-1 counter on up to one creature.
  4. The Locust God triggers, creating a 1/1 Insect creature token with flying and haste.
  5. Repeat.
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