Mirrorpool + Splendid Reclamation + Amulet of Vigor + Need for Speed

Mirrorpool

Splendid Reclamation

Amulet of Vigor

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 tapped.
7. When the lands enter, Amulet of Vigor triggers that many times, untapping the lands.
8. Repeat from step 2.

This looping engine feeds on sacrifice and resurrection to continuously flood your board with mana and triggers. By using Need for Speed to systematically sacrifice every land in play until only Mirrorpool remains, you clear the way to cast and copy Splendid Reclamation. When that copied spell resolves, it returns all your fallen lands to the battlefield all at once, where Amulet of Vigor immediately intervenes to untap them so they can be tapped right back into the engine.