Halvar, God of Battle // Sword of the Realms + Yahenni, Undying Partisan Combos

3 known combos featuring both cards in Commander

Infinite LTB Infinite ETB Infinite sacrifice triggers Infinite death triggers Infinite storm count

Combo 1 with Deathrender + Puresteel Paladin

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers
Steps
  1. Activate Yahenni by sacrificing the creature with Sword of the Realms and Deathrender attached.
  2. When the creature dies, Sword of the Realms and Deathrender trigger.
  3. Resolve the Sword of the Realms trigger, returning the creature from your graveyard to your hand.
  4. Resolve the Deathrender trigger, putting a creature card from your hand onto the battlefield and attaching Deathrender to it.
  5. Resolve the Yahenni ability.
  6. Activate Sword of the Realms by paying {0}, attaching it to the creature that has Deathrender attached.
  7. Repeat.

Combo 2 with Ancient Adamantoise + Amulet of Vigor

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite storm count
Show steps
  1. Activate Yahenni by sacrificing Ancient Adamantoise.
  2. When Ancient Adamantoise dies, it and Sword of the Realms trigger.
  3. Resolve the Sword of the Realms trigger, returning Ancient Adamantoise from your graveyard to your hand.
  4. Resolve the Ancient Adamantoise trigger, creating ten tapped Treasure tokens.
  5. When the Treasures enter, Amulet of Vigor triggers ten times, untapping the Treasures.
  6. Resolve the Yahenni ability.
  7. Activate the Treasures by tapping and sacrificing them, adding {6}{G}{G}{G}{W}.
  8. Cast Ancient Adamantoise by paying {5}{G}{G}{G}.
  9. Activate Sword of the Realms by paying {1}{W}, attaching it to Ancient Adamantoise.
  10. Repeat.

Combo 3 with Ancient Adamantoise + Archelos, Lagoon Mystic

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite storm count
Show steps
  1. Activate Yahenni by sacrificing Ancient Adamantoise.
  2. When Ancient Adamantoise dies, it and Sword of the Realms trigger.
  3. Resolve the Sword of the Realms trigger, returning Ancient Adamantoise from your graveyard to your hand.
  4. Resolve the Ancient Adamantoise trigger, creating ten Treasure tokens that are untapped due to Archelos.
  5. Resolve the Yahenni ability.
  6. Activate the Treasures by tapping and sacrificing them, adding {6}{G}{G}{G}{W}.
  7. Cast Ancient Adamantoise by paying {5}{G}{G}{G}.
  8. Activate Sword of the Realms by paying {1}{W}, attaching it to Ancient Adamantoise.
  9. Repeat.
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