Yedora, Grave Gardener + Ambush Commander + Altar of Dementia

Prerequisites

• You control at least one additional nontoken Forest.

Steps

1. 1Activate Altar of Dementia by sacrificing a nontoken Forest, which is a creature due to Ambush Commander.
2. 2When the Forest dies, Yedora triggers, returning the Forest from your graveyard to the battlefield face down as a Forest land.
3. 3Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.
4. 4Repeat.

Effects

• Infinite death triggers
• Infinite ETB
• Infinite landfall triggers
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill