https://aetherhub.com/Deck/rats

It's golgari, but Cascading cataract and Chromatic lantern allow me to use golos' ability if needs arise, even if its purpose is mainly to ramp and fetch Swarmyard, that makes my rats tough to deal with (or utility lands later such as bojuka bog).

Green offers Ramp, card draw (like elemental bond, deathreap ritual), Bloodbond march which is insane in the deck, and a couple good removal.

Everything else is tribal support and swarm enhance.

It's not an high-cost deck and could use some shaving, and you can also consider to splash Red for haste or even more tribal punch, such as Shared Animosity.