Solemnity + Luminous Broodmoth + Spore Frog

Solemnity

Luminous Broodmoth

Spore Frog

How it works

1. Activate Spore Frog by sacrificing it.
2. When Spore Frog dies, Luminous Broodmoth triggers, returning Spore Frog from your graveyard to the battlefield without a flying counter on it due to Solemnity.
3. Resolve the Spore Frog ability.
4. Repeat.

This elegant loop relies on Solemnity to completely bypass the intended drawback of Luminous Broodmoth. Because Solemnity prevents counters from being placed on any permanent, the Broodmoth returns Spore Frog to the battlefield cleanly stripped of its usual flying counter. This leaves the hapless amphibian completely unhindered and ready to be sacrificed over and over again, allowing you to fog combat damage indefinitely while generating an endless stream of death, entry, and exit triggers.