Doubling Season +

Doubling Season + Yahenni, Undying Partisan Combos

2 known combos featuring both cards in Commander

Infinite LTB Infinite ETB Infinite sacrifice triggers Infinite death triggers Infinite creature tokens

Combo 1 with Grist, Voracious Larva // Grist, the Plague Swarm + Hidden Herbalists + Body Launderer +1 more

Also requires: Grist, Voracious Larva // Grist, the Plague Swarm Grist, Voracious Larva // Grist, the Plague Swarm Hidden Herbalists Hidden Herbalists Body Launderer Body Launderer Yahenni, Undying Partisan Yahenni, Undying Partisan
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite creature tokens · Infinite green mana · Infinite copies of creature cards in your graveyard that are 1/1 Insects
Steps
  1. Activate Yahenni by sacrificing Body Launderer.
  2. When Body Launderer dies, its second ability triggers, returning Grist, Voracious Larva from your graveyard to the battlefield.
  3. When Grist, Voracious Larva enters the battlefield, it triggers, causing you to pay {G} to exile it and return it to the battlefield as Grist, the Plague Swarm with six loyalty counters due to Doubling Season.
  4. Resolve the Yahenni ability.
  5. Activate Grist, the Plague Swarm's third loyalty ability by removing six loyalty counters from it.
  6. Grist, the Plague Swarm is put into your graveyard as a state-based action due to having zero loyalty.
  7. Resolve the Grist, the Plague Swarm ability, creating two token copies of each creature card in your graveyard that are 1/1 Insects.
  8. Put all but one of the Grist, Voracious Larva tokens into your graveyard due to the legend rule.
  9. When the Grist, Voracious Larva and Hidden Herbalist tokens enter the battlefield, each Hidden Herbalist token triggers once and each Grist, Voracious Larva token triggers for each token created this way.
  10. Resolve all Grist, Voracious Larva triggers, choosing not to pay.
  11. Resolve both Hidden Herbalist triggers, adding {G}{G}{G}{G}.
  12. Activate Yahenni by sacrificing the Grist, Voracious Larva token.
  13. Repeat from step 1, sacrificing a Body Launderer token instead.

Combo 2 with Prosper, Tome-Bound + Goldspan Dragon + Flameskull +1 more

Also requires: Prosper, Tome-Bound Prosper, Tome-Bound Goldspan Dragon Goldspan Dragon Flameskull Flameskull Yahenni, Undying Partisan Yahenni, Undying Partisan
Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite storm count · Exile your library · Infinite Treasure tokens
Show steps
  1. Activate Yahenni by sacrificing Flameskull.
  2. When Flameskull dies, it triggers, exiling it and the top card of your library with the ability to cast one from exile this turn.
  3. Resolve the Yahenni ability.
  4. Cast Flameskull from exile by paying {1}{R}{R}.
  5. Prosper's second ability triggers, creating two Treasure tokens.
  6. Activate the Treasures by tapping and sacrificing them, adding {2}{R}{R}.
  7. Repeat.
📚 Learn more:
Buy Doubling Season on TCGPlayer Buy on Amazon

As an Amazon Associate and TCGPlayer affiliate I earn from qualifying purchases.

Buy Yahenni, Undying Partisan on TCGPlayer Buy on Amazon

As an Amazon Associate and TCGPlayer affiliate I earn from qualifying purchases.