Zimone, Mystery Unraveler, Yedora, Grave Gardener, and Umbral Collar Zealot

Prerequisites

• Zimone, Mystery Unraveler on the battlefield
• Yedora, Grave Gardener on the battlefield
• Umbral Collar Zealot on the battlefield

Steps

1. Activate Umbral Collar Zealot by sacrificing it
2. When Umbral Collar Zealot dies, Yedora triggers, returning Umbral Collar Zealot from your graveyard to the battlefield face-down as a Forest land
3. When Umbral Collar Zealot enters the battlefield as a Forest land, Zimone triggers
4. Holding priority, activate the land by tapping it, adding
5. Resolve the Zimone trigger, turning the creature face-up
6. Resolve the Umbral Collar Zealot ability from step 1, doing nothing
7. Repeat

Results

• Infinite LTB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite green mana
• Infinite landfall triggers
• Infinite surveil 1