So I'm not the world's greatest deckbuilder, someone will probably be along in a bit to tell you if any aspect is out of whack. However, I can suggest upgrades/replacements for some of the stuff, especially creatures and lands. I'll tag everything as you may or may not have heard of the stuff I'm recommending.
Personally I'd cut the creature based ramp (other than possibly Yavimaya Elder, he's card advantage) for either more mana rocks such as Darksteel Ingot, Rakdos Signet, Golgari Signet and Gruul Signet or spell based ramp such as Cultivate and Kodama's Reach. Reason being, there's a lot of wraths in the average game of commander, and suddenly having three less mana than you expected because some other guy's board needed to die is a real pain.
Change Druid Lyrist out for Caustic Caterpillar. Sure it's one more mana overall, but you can do it the same turn and it'll hit artifacts as well. Ravenous Chupacabra is a straight upgrade on Nekrataal. You aren't running enough Beasts to make Ravenous Baloth worthwhile, maybe swap it for something like Soul of the Harvest for the extra card draw? At he end of the day, more cards is batter than more life. Maybe Fleshbag Marauder/Merciless Executioner over Abyssal Gatekeeper? Oh, I'd probably try and find room for Solemn Simulacrum
There's a few things I'd cut but I've got no specific swap in for them, namely Spiritmonger, Vaevictis Asmadi, Thunderscape Master and Thunderscape Battlemage. There's just better fatties out there nowadays, have a tool around on Gatherer/Scryfall and see what takes your fancy.
Right then, land. Savage Lands in for Koskun Falls would be my first swap, followed swiftly by Evolving Wilds in for Terminal Moraine. Depending on budget as well, there's also the option of running the fetches/shocklands in your colours such as Bloodstained Mire and Blood Crypt.
All in all, looks like a solid first run, mainly hampered by the age of your collection in terms of power level. Kudos on trying to make an older legend work as well, I feel like older generals gets overlooked in favour of newer, shinier toys sometimes.