Mortuary + Shield Sphere + Yahenni, Undying Partisan + Gwenom, Remorseless

Mortuary

Shield Sphere

Yahenni, Undying Partisan

Gwenom, Remorseless

How it works

1. Activate Yahenni by sacrificing Shield Sphere
2. When Shield Sphere dies, Mortuary triggers, putting Shield Sphere from your graveyard onto the top of your library.
3. Resolve the Yahenni ability.
4. Cast Shield Sphere from the top of your library by paying 0 life.
5. Repeat.

This clever loop relies on Mortuary to intercept your creatures as they hit the graveyard, immediately recycling them back to the top of your library instead of letting them stay there. Gwenom, Remorseless then breaks the rules of the game by letting you cast that zero-mana artifact right off the top of your library for zero life. Meanwhile, Shield Sphere serves as the ultimate disposable fuel with its free defender body, letting Yahenni, Undying Partisan sacrifice it endlessly to churn out infinite death triggers and storm count.