Toph, the First Metalbender + Ugin's Nexus + Meticulous Excavation + Troubled Healer

Toph, the First Metalbender

Ugin's Nexus

Meticulous Excavation

Troubled Healer

How it works

1. Cast Ugin's Nexus by paying 5.
2. At the beginning of your end step, Toph triggers, causing Ugin's Nexus to become an artifact land creature.
3. Activate Troubled Healer by sacrificing Ugin's Nexus. Ugin's Nexus is exiled instead of being put into your graveyard, causing you to take an extra turn after this one.
4. Toph triggers, returning Ugin's Nexus from exile to the battlefield.
5. Resolve the Troubled Healer ability.
6. Activate Meticulous Excavation by paying 2, returning Ugin's Nexus from the battlefield to your hand.
7. Repeat each turn.

This elegant loop bends the rules of time itself by weaponizing the unique intersection of Toph, the First Metalbender and Ugin's Nexus. Toph cleverly transforms Ugin's Nexus from a plain artifact into a land, allowing Troubled Healer to sacrifice it as a cost. Because Ugin's Nexus triggers when it goes to the graveyard, sending it to exile instead still fulfills its replacement effect to grant you an extra turn—and thanks to Toph's earthbend delayed trigger, that exiled artifact land returns safely to the battlefield to be picked back up by Meticulous Excavation.