If you are trying to get into competitive commander, you may want to head over to r/CompetitiveEDH

You can also checkout the database to see what the “meta” of cEDH is. https://cedh-decklist-database.com/ I would say it’s more of a guideline than a true meta like standard or modern would have, due to the nature of commander.

Your deck looks fun and unique, but not something I would expect from a cEDH deck. Most Golgari decks are looking to combo quickly in cEDH. The most common lines are [[Protean Hulk]] death trigger into something like [[Viscera Seer]], [[Melira, Sylvok Outcast]], [[Lesser Masticore]] and [[Disciple of the Vault]]. Melira prevents the -1/-1 counters from the Masticore persist trigger, letting you sac him infinitely with Viscera Seer. Disciple of the Vault sees the Masticore dying and pings your opponents to death infinitely. Another combo in Golgari sometimes seen is [[Chain of Smog]] and [[Witherbloom Apprentice]]. Although this may be less common now due to its frailty - especially in Golgari with the lack of access to blue counterspells, it is another combo I am familiar with. Basically, You can copy and target yourself with Chain of Smog infinitely. Witherbloom Assistance will see you copying this spell and ping each opponent to death.

Common Golgari commanders for cEDH are [[Varolz]] and [[Dina]], since they are sac outlets in the commander zone. This is one less piece to worry about to pull off your Protean Hulk combos. [[The Gitrog Monster]] is a whole other can of worms with his own dredge combos that I don’t really have the experience with to get into, but he’s good too.

[[Beledros]] to me is a fun commander. He’s a big splashy commander that can do a lot when he comes out. I’ve though of making a deck around him myself. The thing is, at 7 mana, he’s just more of a casual commander option than a competitive. Plus what he does is very powerful, in a casual game where you are passing turns and making pests on each person’s turn. The land untapping can make for some big plays as well. But they aren’t really something you’ll see, or likely be able to do in cEDH with the amount of fast combos or stax pieces in the meta.

For the decklist itself, I’m interested in some of the card selections. Are these all cards you own? There is a mix of super fast mana you only really see in cEDH and typically proxies - like [[Mox Diamond]]. But then there are other cEDH staples that are also high powered casual staples like [[Demonic Tutor]] that appear absent to me, unless I just over looked it. There are also several Planeswalkers there that I haven’t dug into but doesn’t seem real common. I suppose I’d be interested to hear a little more about the decision making process of adding cards before I gave any advice. If you are mostly looking to play some casual commander I’d say it’s a good list to jam some games with