Yedora, Grave Gardener, Life and Limb, and Ashnod's Altar

Prerequisites

• Yedora, Grave Gardener on the battlefield
• Life and Limb on the battlefield
• Ashnod's Altar on the battlefield
• You control an additional nontoken creature

Steps

1. Activate Ashnod's Altar by sacrificing another nontoken creature you control, adding
2. The creature dies, triggering Yedora, returning the creature from your graveyard to the battlefield face down as a Forest land and as a 1/1 Saproling due to Life and Limb
3. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite landfall triggers
• Infinite LTB
• Infinite sacrifice triggers