Rat King, Verminister + Yahenni, Undying Partisan Combos

2 known combos featuring both cards in Commander

Infinite LTB Infinite death triggers Infinite sacrifice triggers Infinite ETB Infinite mana creatures you control can produce

Combo 1 with Thornbite Staff + Belonging

Results: Infinite LTB · Infinite death triggers · Infinite sacrifice triggers · Infinite ETB
Steps
  1. Cast Belonging by paying {5}{W}.
  2. When Belonging enters, it triggers, creating three 1/1 Shapeshifter creature tokens with changeling.
  3. Activate Yahenni by sacrificing Belonging.
  4. When Belonging dies, Rat King triggers, untapping Rat King.
  5. Resolve the Yahenni ability.
  6. Activate Rat King by tapping it and sacrificing the Shapeshifters.
  7. When the Shapeshifters die, Rat King triggers three times, untapping Rat King.
  8. Resolve the Rat King ability from step 5, returning Belonging from your graveyard to the battlefield.
  9. Repeat from step 2.

Combo 2 with Intruder Alarm + Belonging

Results: Infinite ETB · Infinite LTB · Infinite death triggers · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Cast Belonging by paying {5}{W}.
  2. When Belonging enters, it and Intruder Alarm trigger.
  3. Resolve the Belonging trigger, creating three 1/1 Shapeshifter creature tokens with changeling.
  4. When the Shapeshifters enter, Intruder Alarm triggers three times. Resolve the Intruder Alarm triggers from this step and step 2, untapping all creatures four times.
  5. Activate Yahenni by sacrificing Belonging.
  6. Activate Rat King by tapping it and sacrificing the Shapeshifters, returning Belonging from your graveyard to the battlefield.
  7. Repeat from step 2.
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