Doom Weaver + Olivia, Mobilized for War Combos

3 known combos featuring both cards in Commander

Infinite self-discard triggers Near-infinite ETB Infinite draw triggers Infinite looting Near-infinite LTB

Combo 1 with Umbral Collar Zealot

Also requires: Umbral Collar Zealot Umbral Collar Zealot
Results: Infinite self-discard triggers · Near-infinite ETB · Infinite draw triggers · Infinite looting · Near-infinite LTB · Near-infinite death triggers · Near-infinite sacrifice triggers · Near-infinite surveil
Steps
  1. Activate Umbral Collar Zealot by sacrificing the persist creature.
  2. When the persist creature dies, it triggers twice, once from its persist ability and once from the ability granted to it by Doom Weaver.
  3. Resolve the first trigger, causing you to draw a card.
  4. Resolve the persist trigger, returning the creature from your graveyard to the battlefield with a -1/-1 counter on it.
  5. When the persist creature enters the battlefield, Olivia and Doom Weaver's soulbond ability trigger.
  6. Resolve the Olivia trigger, putting a +1/+1 counter on the persist creature and causing you to discard a card.
  7. Resolve the Doom Weaver trigger, pairing it and the persist creature.
  8. Resolve the Umbral Collar Zealot ability.
  9. Repeat.

Combo 2 with Phantom Train

Also requires: Phantom Train Phantom Train
Results: Infinite self-discard triggers · Near-infinite ETB · Infinite draw triggers · Infinite looting · Near-infinite LTB · Near-infinite death triggers · Near-infinite sacrifice triggers · Near-infinite +1/+1 counters on a creature
Show steps
  1. Activate Phantom Train by sacrificing the persist creature.
  2. When the persist creature dies, its persist ability and the ability granted to it by Doom Weaver trigger.
  3. Resolve the trigger from the ability granted by Doom Weaver, causing you to draw a card.
  4. Resolve the persist trigger, returning the creature from your graveyard to the battlefield with a -1/-1 counter on it.
  5. When the persist creature enters the battlefield, Doom Weaver's soulbond ability and Olivia trigger.
  6. Resolve the Olivia trigger, putting a +1/+1 counter on the persist creature and causing you to discard a card.
  7. Resolve the Doom Weaver trigger, repairing it and the persist creature.
  8. Resolve the Phantom Train ability.
  9. Repeat.

Combo 3 with Shilgengar, Sire of Famine

Also requires: Shilgengar, Sire of Famine Shilgengar, Sire of Famine
Results: Near-infinite ETB · Infinite draw triggers · Infinite looting · Near-infinite LTB · Near-infinite death triggers · Near-infinite sacrifice triggers · Near-infinite Blood tokens · Infinite self-discard triggers
Show steps
  1. Activate Shilgengar by sacrificing the persist creature.
  2. When the persist creature dies, it and Doom Weaver trigger.
  3. Resolve the Doom Weaver trigger, causing you to draw a card.
  4. Resolve the persist creature's trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  5. When the persist creature enters the battlefield, Olivia and Doom Weaver trigger.
  6. Resolve the Olivia trigger, putting a +1/+1 counter on the persist creature and causing you to discard a card.
  7. Resolve the Doom Weaver trigger, repairing it and the persist creature.
  8. Resolve the Shilgengar ability.
  9. Repeat.
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