Leonardo, Sewer Samurai + Solemnity + Ornithopter + Bloodthrone Vampire

Leonardo, Sewer Samurai

Solemnity

Ornithopter

Bloodthrone Vampire

How it works

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

This ingenious loop turns a humble mechanical bug into an engine of limitless power, orchestrated from the graveyard by Leonardo, Sewer Samurai. While Leonardo normally saddles creatures cast from your graveyard with finality counters, Solemnity steps in as a masterclass in prevention, ensuring no counters can ever be placed. This allows you to repeatedly cast Ornithopter for free, feeding it to Bloodthrone Vampire's sacrifice ability to endlessly grow the vampire while generating an infinite stream of enter-the-battlefield, leave-the-battlefield, and death triggers.