Yedora, Grave Gardener, Phyrexian Altar, and Daru Healer

Prerequisites

• Yedora, Grave Gardener on the battlefield
• Phyrexian Altar on the battlefield
• Daru Healer on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Daru Healer, adding
2. When Daru Healer dies, Yedora triggers, returning Daru Healer from your graveyard to the battlefield face down as a Forest land
3. Activate Daru Healer by tapping it, adding
4. Activate Daru Healer's morph ability by paying , turning it face up
5. Repeat

Results

• Infinite death triggers
• Infinite green mana
• Infinite landfall triggers
• Infinite LTB
• Infinite sacrifice triggers