Mortuary + Umbral Collar Zealot + Shield Sphere + Gwenom, Remorseless

Mortuary

Umbral Collar Zealot

Shield Sphere

Gwenom, Remorseless

How it works

1. Activate Umbral Collar Zealot 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 Umbral Collar Zealot 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 permanents as they perish, instantly recycling them right back to the top of your library so the cycle can begin anew. By using Umbral Collar Zealot to sacrifice Shield Sphere for a quick surveil, you set up the top of your deck while triggering the graveyard-to-library redirection. Meanwhile, Gwenom, Remorseless grants you the vital permission to play cards directly from the top of your library, swapping traditional mana costs for a life payment—which, in the case of a zero-cost artifact like Shield Sphere, costs you absolutely nothing to recast.