Tatyova, Steward of Tides, Yedora, Grave Gardener, and Altar of Dementia

Prerequisites

• Tatyova, Steward of Tides on the battlefield
• Yedora, Grave Gardener on the battlefield
• Altar of Dementia on the battlefield
• You control an additional nontoken creature
• You control at least six lands

Steps

1. Activate Altar of Dementia by sacrificing a nontoken creature
2. The creature dies, triggering Yedora, returning the creature from your graveyard to the battlefield face down as a Forest land
3. The face-down Forest enters the battlefield, triggering Tatyova, causing the Forest to become a 3/3 Elemental with haste until end of turn
4. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to the sacrificed creature's power
5. Activate the Forest by tapping it, adding
6. Repeat

Results

• Infinite death triggers
• Infinite green mana
• Infinite landfall triggers
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill