Yedora, Grave Gardener, Phyrexian Altar, and Wall of Deceit

Prerequisites

• Yedora, Grave Gardener on the battlefield
• Phyrexian Altar on the battlefield
• Wall of Deceit on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Wall of Deceit, adding
2. When Wall of Deceit dies, Yedora triggers, returning Wall of Deceit from your graveyard to the battlefield face down as a Forest land
3. Activate Wall of Deceit by tapping it, adding
4. Activate Wall of Deceit'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