Leonardo, Sewer Samurai + Solemnity + Memnite + Bloodflow Connoisseur

Leonardo, Sewer Samurai

Solemnity

Memnite

Bloodflow Connoisseur

How it works

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

This loop cleverly sidesteps the usual permanent restrictions of graveyard casting by letting Leonardo, Sewer Samurai pull Memnite straight from the graveyard for free, all while its self-contained finality counters are completely blocked from being placed thanks to Solemnity. With that safety net in place, Bloodflow Connoisseur steps in as the engine's hungry heart, devouring the recurring artifact creature to grow ever larger while generating an endless stream of sacrifice and death triggers.