Muldrotha, the Gravetide + Ugin's Nexus + Isochron Scepter + Pull from Eternity + Grinding Station

Muldrotha, the Gravetide

Ugin's Nexus

Isochron Scepter

Pull from Eternity

Grinding Station

How it works

1. Activate Grinding Station by tapping it and sacrificing Ugin's Nexus, causing target player to mill three cards.
2. When Ugin's Nexus is sacrificed, it is exiled instead of being put into your graveyard, causing you to take an extra turn after this one.
3. Move to your next turn.
4. Activate Isochron Scepter by paying 2 and tapping it, casting a copy of Pull from Eternity without paying its mana cost.
5. Resolve Pull from Eternity, putting Ugin's Nexus from exile into your graveyard.
6. Cast Ugin's Nexus from your graveyard by paying 5.
7. When Ugin's Nexus enters the battlefield, Grinding Station triggers, untapping Grinding Station.
8. Repeat.

This ingenious loop locks down the game by chaining infinite extra turns through the graceful synergy of recycling and recasting artifacts. **Ugin's Nexus** serves as our engine's heart; whenever it is put into a graveyard from the battlefield, it exiles itself and grants you an extra turn. To prevent the Nexus from staying permanently trapped in exile, **Isochron Scepter** steps in with **Pull from Eternity** imprinted, allowing us to continuously fish the artifact back out of exile and straight into our graveyard. From there, **Muldrotha, the Gravetide** provides the vital permission to freely cast that very same Ugin's Nexus right back from the graveyard on your turn. Finally, **Grinding Station** ties the entire machinery together by sacrificing the Nexus to mill cards, while its passive untap ability automatically resets itself every single time the Nexus re-enters the battlefield.