Lumra, Bellow of the Woods, Springheart Nantuko, Thaumatog, and Lotus Cobra

Prerequisites

• Lumra, Bellow of the Woods on the battlefield
• Springheart Nantuko on the battlefield
• Thaumatog on the battlefield
• Lotus Cobra on the battlefield
• available

Steps

1. Play any land
2. When the land enters the battlefield, Springheart Nantuko triggers
3. Holding priority, activate Thaumatog by sacrificing a land
4. Repeat step 3 until you control no lands
5. Resolve the Springheart Nantuko trigger, causing you to pay to create a token copy of Lumra
6. Put the token Lumra into your graveyard due to the legend rule
7. The Lumra token's enter-the-battlefield ability triggers, causing you to mill four cards and returning all lands from your graveyard to the battlefield
8. When the lands enter the battlefield, Springheart Nantuko and Lotus Cobra trigger that many times
9. Resolve all Lotus Cobra triggers, adding for each trigger
10. Resolve all but one Springheart Nantuko trigger, choosing not to pay and creating that many 1/1 Insect creature tokens
11. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite death triggers
• Infinite self-mill
• Infinite landfall triggers
• Infinitely large Thaumatog until end of turn
• Infinite mana lands you control can produce
• Infinite untap of lands you control
• Infinite colored mana
• Put all land cards from your library and graveyard onto the battlefield tapped