Leonardo, Sewer Samurai + Solemnity + Viscera Seer + Shield Sphere

Leonardo, Sewer Samurai

Solemnity

Viscera Seer

Shield Sphere

How it works

1. Activate Viscera Seer by sacrificing Shield Sphere.
2. Cast Shield Sphere from your graveyard by paying 0. It will not enter with a finality counter on it due to Solemnity.
3. Repeat.

This elegant recursive loop relies on Solemnity to completely neutralize the drawbacks of your other permanents, letting you sacrifice and replay Shield Sphere endlessly for zero mana. Leonardo, Sewer Samurai provides the crucial engine that lets you cast that 0-mana artifact creature right out of your graveyard, completely bypassing its finality counter thanks to Solemnity's static ability forbidding counters entirely. Meanwhile, Viscera Seer acts as the outlet to sacrifice the Shield Sphere, generating infinite death triggers, sacrifice triggers, and scrys while digging through your library to your heart's content.