Yedora, Grave Gardener, Altar of Dementia, and Horde Ambusher Combo

Yedora, Grave Gardener, Altar of Dementia, and Horde Ambusher

Here's how the cards Yedora, Grave Gardener, Altar of Dementia, and Horde Ambusher results in Infinite death triggers, Infinite green mana, Infinite landfall triggers, Infinite LTB, Infinite mill, Infinite sacrifice triggers, and Infinite self-mill

Yedora, Grave Gardener

Altar of Dementia

Horde Ambusher

Prerequisites

Yedora, Grave Gardener on the battlefield
Altar of Dementia on the battlefield
Horde Ambusher on the battlefield

Steps

Activate Altar of Dementia by sacrificing Horde Ambusher
When Horde Ambusher dies, Yedora triggers, returning Horde Ambusher from your graveyard to the battlefield face down as a Forest land
Resolve the Altar of Dementia ability, causing target player to mill cards equal to Horde Ambusher's power
Activate Horde Ambusher by tapping it, adding
Activate Horde Ambusher's morph ability by revealing a red card from your hand, turning it face up
Repeat