This deck looks like fun to play. He is boss as a commander.

It feels like you're running a lot of enchantments, and not a lot of repeatable card draw. Necropotence is always good (even with the crazy mana cost) and Staff of Nin has no real drawback, plus it's cheap. Graveborn Muse is another alternative.

Necropotence is excellent, but the Staff is likely to make it into the deck quicker on account of it's 85 cents. Added both to the wishlist.

What's the purpose of Glissa, the Traitor? I can only see 11 artifacts total in the deck. I feel there's something that would fit the deck better

I'm guessing Glissa, the Traitor is here to keep Colfenor's Urn in play. but i agree not enough use to keep her in.

She was part of 2 sub-themes that got toned down or removed-- deathtouch+lure, and artifacts. I left her in because she's still a good blocker, and it's pretty likely I'd like to fish an artifact out at some point.

The swap would probably be Glissa, the Traitor for Vhati il-Dal, another 3/3 with a more on-theme effect.

Oh, also: Disowned Ancestor OUT, Jeskai Barricade IN.

Some cards i would consider Abzan Charm, Harmonize, Nyx-Fleece Ram, Courser of Kruphix, Athreos, God of Passage, Primeval Titan, Oracle of Mul Daya, Collective Voyage, Genesis Wave, Explore, Spellskite, Bow of Nylea, Gavony Township, Trostani, Selesnya's Voice I'm sure i could find more if i looked those are just off the top of my head.

I thought about Abzan Charm, but the counters are irrelevant and I'm basically unworried about big creatures. Harmonize is good but 1 use only-- Courser of Kruphix and Staff of Nin / Necropotence might be better.

Big-power creatures that can't avoid my wipes are low-priority. I've only got a handful in right now, and they're all things that are combos with other parts of the creature strategy.

Collective Voyage, Genesis Wave, and Explore aren't bad choices. On that theme, Collected Company is on my wishlist already.

Bow of Nylea was a hard cut to make, but I just don't need all the cool stuff it does.

Gavony Township goes right on the buylist. Why not? Trostani, Selesnya's Voice is good, but I'd never use the Populate. Added to buylist, but I'll shop for similar effects.

I was thinking Abzan Charm as a draw engine or removal if you don't need the cards. Bow of Nylea has the put cards back in your deck which is why i love it in edh so much. As for Trostani, Selesnya's Voice gains crazy life in doran edh decks buying you time. Just commented on those cause i saw a different use then you did for them.