Mirrorpool + Splendid Reclamation + Archelos, Lagoon Mystic + Need for Speed

Mirrorpool

Splendid Reclamation

Archelos, Lagoon Mystic

Need for Speed

How it works

1. Cast Splendid Reclamation by paying 3.
2. Holding priority, activate any number of lands you control except Mirrorpool by tapping them, adding at least 2C.
3. Activate Need for Speed 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 2C, tapping and sacrificing it, copying Splendid Reclamation.
6. Resolve the Splendid Reclamation copy, returning all land cards from your graveyard to the battlefield untapped due to Archelos.
7. Repeat from step 2.

This brilliant engine turns a graveyard full of land into an infinite resource loop, fueled by carefully thinning your board down to just the right pieces. By using Need for Speed repeatedly, you sacrifice every land except Mirrorpool to clear the way, setting up Mirrorpool's second ability to copy the spell you're about to cast. When you cast Splendid Reclamation, you harvest that massive graveyard to flood the battlefield, and because Archelos, Lagoon Mystic is thankfully untapped on your return, those lands slide right into play ready for action. You can then tap everything for mana, feed more lands to Need for Speed, and repeat the process to generate infinite mana and landfall triggers.