Toph, the First Metalbender + Ugin's Nexus + Meticulous Excavation + Shilgengar, Sire of Famine

Toph, the First Metalbender

Ugin's Nexus

Meticulous Excavation

Shilgengar, Sire of Famine

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 Shilgengar 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 Shilgengar ability.
6. Activate Meticulous Excavation by paying 2, returning Ugin's Nexus from the battlefield to your hand.
7. Repeat each turn.

This brilliant loop hinges on Toph, the First Metalbender transforming Ugin's Nexus into a land, allowing it to masquerade as both an artifact and a permanent that can be manipulated in unconventional ways. When you feed that Nexus to Shilgengar, Sire of Famine, its replacement effect triggers to exile itself and hand you an extra turn while fueling your blood reserves. Meanwhile, Meticulous Excavation stands ready to bounce the Nexus back to your hand for replayability, or Toph's own earthbend trigger can return it if it ever perishes as a creature. By repeatedly recycling the Nexus to dodge its graveyard clause and chaining extra turns, you lock your opponents out of the game entirely.