Emeria Shepherd, World Shaper, Lithatog, and Umbral Collar Zealot

Prerequisites

• Emeria Shepherd on the battlefield
• World Shaper on the battlefield
• Lithatog on the battlefield
• Umbral Collar Zealot on the battlefield

Steps

1. Activate Lithatog by sacrificing a land
2. Repeat step 1 until you control no lands
3. Activate Umbral Collar Zealot by sacrificing World Shaper
4. When World Shaper dies, it triggers, return all lands from your graveyard to the battlefield tapped
5. When the lands enter, Emeria Shepherd triggers that many times
6. Resolve an Emeria Shepherd trigger that was triggered by a Plains, returning World Shaper from your graveyard to the battlefield
7. Resolve all remaining Emeria Shepherd triggers
8. Resolve the Umbral Collar Zealot ability
9. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite self-mill
• Infinite landfall triggers
• Return all nonland permanents from your graveyard to the battlefield
• Infinite surveil 1
• Infinitely large Lithatog until end of turn