Mortuary + Bartolomé del Presidio + Shield Sphere + Gwenom, Remorseless

Mortuary

Bartolomé del Presidio

Shield Sphere

Gwenom, Remorseless

How it works

1. Activate Bartolomé del Presidio 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 Bartolomé del Presidio ability.
4. Cast Shield Sphere from the top of your library by paying 0 life.
5. Repeat.

This ingenious loop turns a fragile 0-mana artifact into a self-sustaining engine by exploiting the interaction between Mortuary and the top of your library. You use Bartolomé del Presidio to repeatedly sacrifice Shield Sphere, which instantly triggers Mortuary to recycle the zero-cost defender right back onto your library. Meanwhile, Gwenom, Remorseless enables you to cast Shield Sphere directly from the top of your library for zero life, completely bypassing traditional mana costs and feeding the cycle anew.