Id recommend reading through the reviews yourself to see if any of these are a good fit for you

Quandrix students, help me count to five: Primo, the Unbounded, which I will absolutely be building, introducing the first-ever base-power-0 matters commander that builds big Fractal tokens when creatures with 0 base power deal combat damage Yavimaya Bloomsage, the only creature in the prepare cycle to feature a flat-out banned card in Channel, made ready by putting a +1/+1 counter on a creature that subsequently has power 7 or greater Owlin Spiralmancer, a powerful creature that copies the first X-cost spell you cast every turn (including on your opponents' turns) Nexus Mentality, a member of the highly exclusive club of cards that can move counters between nonland permanents (sadly, this doesn't let you rip counters away from Dark Depths) Turbulent Wilderness, the final land (for now) in the Turbulent cycle When it comes to blue-green, it can sometimes be difficult to build a deck with a cohesive theme that doesn't lean too hard on broad themes like +1/+1 counters or Lands Matter

Ygra is in the same colors as both Hazel and Chatterfang and both were in the precon deck
The graveyard is a face-up pile that players usually place adjacent to their library
It's an on-curve beater, and it features unearth for it's mana cost of 8 or another cast and attack once more each before being exiled
I always sleeve up my Cosima, God of the Voyage as The Omenkeel to steal from my opponents mana bases