Mortuary + Thermopod + Bolas's Citadel + Shield Sphere

Mortuary

Thermopod

Bolas's Citadel

Shield Sphere

How it works

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

This clever loop turns zero-mana artifacts into a fountain of red mana and infinite storm count by turning Bolas's Citadel into a twisted engine of rebirth. Because Bolas's Citadel lets you cast spells from the top of your library for life instead of mana, you can continuously cast Shield Sphere for free, bypassing normal resource restrictions entirely. Whenever Thermopod demands a sacrifice to generate red mana, the unfortunate Shield Sphere hits the graveyard and immediately triggers Mortuary, which places the zero-cost defender right back on top of your library to begin the cycle anew.