Mirrorpool, Splendid Reclamation, Trenching Steed, and Tiller Engine

Prerequisites

• Mirrorpool on the battlefield
• Splendid Reclamation in hand
• Trenching Steed on the battlefield
• Tiller Engine on the battlefield
• available

Steps

1. Cast Splendid Reclamation by paying
2. Holding priority, activate any number of lands you control except Mirrorpool by tapping them, adding at least
3. Activate Trenching Steed by sacrificing a land other than Mirrorpool
4. Repeat step 3 until Mirrorpool is the only land you control
5. Activate Mirrorpool's second ability by paying , tapping and sacrificing it, copying Splendid Reclamation
6. Resolve the Splendid Reclamation copy, returning all land cards from your graveyard to the battlefield tapped
7. When the lands enter, Tiller Engine triggers that many times, untapping the lands
8. Repeat from step 2

Results

• Infinite mana lands you control can produce
• Infinite magecraft triggers
• Infinite landfall triggers