Yedora, Grave Gardener + Ashnod's Altar + Urborg, Tomb of Yawgmoth + Kormus Bell

Yedora, Grave Gardener
Ashnod's Altar
Urborg, Tomb of Yawgmoth
Kormus Bell

Requires
Yedora, Grave Gardener must be on the battlefield. Ashnod's Altar must be on the battlefield. Urborg, Tomb of Yawgmoth must be on the battlefield. Kormus Bell must be on the battlefield. You control at least one additional nontoken creature.
Steps
  1. Activate Ashnod's Altar by sacrificing another nontoken creature you control, adding .
  2. When the creature dies, Yedora triggers, returning the creature from your graveyard to the battlefield face down as a Forest land and as a 1/1 Swamp creature due to Kormus Bell and Urborg.
  3. Repeat.
Results
Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite landfall triggers. Infinite LTB. Infinite sacrifice triggers.

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