Lumra, Bellow of the Woods + Springheart Nantuko + Tireless Provisioner + Trenching Steed

Prerequisites

• You have at least two lands between the battlefield and your graveyard.
• You have a land card in hand.
• You are able to play a land this turn.

Steps

1. 1Play any land.
2. 2When the land enters the battlefield, Springheart Nantuko triggers.
3. 3Holding priority, activate Trenching Steed by sacrificing a land.
4. 4Repeat step 3 until you control no lands.
5. 5Resolve the Springheart Nantuko trigger, causing you to pay to create a token copy of Lumra.
6. 6Put the token Lumra into your graveyard due to the legend rule.
7. 7The Lumra token's enter-the-battlefield ability triggers, causing you to mill four cards and returning all lands from your graveyard to the battlefield tapped.
8. 8When the lands enter the battlefield, Springheart Nantuko and Tireless Provisioner trigger that many times.
9. 9Resolve all Tireless Provisioner triggers, creating at least two Treasure tokens, and then an additional Clue or Treasure token for each remaining trigger.
10. 10Holding priority, activate two Treasures by tapping and sacrificing them, adding .
11. 11Resolve all but one Springheart Nantuko trigger, choosing not to pay and creating that many 1/1 Insect creature tokens.
12. 12Repeat from step 3.

Effects

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite artifact tokens
• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite death triggers
• Infinite Food tokens
• Infinite landfall triggers
• Infinite lifegain
• Infinite lifegain triggers
• Infinite mana lands you control can produce
• Infinite self-mill
• Infinite Treasure tokens
• Infinite untap of lands you control
• Put all lands from your library and graveyard onto the battlefield tapped