Leonardo, Sewer Samurai + Solemnity + Crimson Kobolds + Bloodflow Connoisseur

Leonardo, Sewer Samurai

Solemnity

Crimson Kobolds

Bloodflow Connoisseur

How it works

1. Activate Bloodflow Connoisseur by sacrificing Crimson Kobolds.
2. Cast Crimson Kobolds from your graveyard by paying 0. It will not enter with a finality counter on it due to Solemnity.
3. Repeat.

This ingenious loop revolves around the synergy between Leonardo, Sewer Samurai and Solemnity, where Leonardo's ability to cast zero-mana creature spells from your graveyard is normally kept in check by finality counters. Enter Solemnity, whose static replacement effect completely shuts down all counter placement, allowing you to cast Crimson Kobolds over and over again from the graveyard without ever getting exiled. Once the free-casting engine is running, Bloodflow Connoisseur steps in as the ultimate outlet, letting you repeatedly sacrifice the Crimson Kobolds to grow itself infinitely while generating an endless storm count and a torrent of death and sacrifice triggers.