I had built a Marisi, Breaker of the Coil deck for a league we did which worked out somewhat decently but I never got too far with it. And it wasn't exactly what I wanted.
I also used to have a Hazezon Tamar deck a long time ago which was fun so I had thought of that as an option as well. However, at 7 mana he is quite expensive and the format has sped up enough where a 7 mana Commander is tougher to make work. Also, the deck always felt like it was built around making Hazezon work rather than working with Hazezon. That is, there were a lot of sac outlets and things to try to get around his exile clause which seemed to create a lot of unwanted tension.
After looking at a lot of the options in Naya, of which there are a lot of decent ones, I settled on the other Hazezon: Hazezon, Shaper of Sand. This is still token based but in a way that is easier to make work without a huge drawback. Here is the list I am starting with:
I am trying to go fairly heavy into tokens of all different kinds if they make sense which means that there might be an argument for including Tendershoot Dryad and its artifact version.
However, I have tried to tie most tokens to lands in some way. I have moved away from some landfall options, like Emeria Angel, but Squirrel Wrangler and Goblin Trenches work in conjunction with Hazezon by getting lands into the yard to replay.
On the flip side of this, I am not sure how much I like Doubling Season and Anointed Procession. I do like the creature based versions but during testing it seems like it is taking too much time off to get one of those down. Especially when they are just going to eat a removal spell. I have them here for now, but I am leaning towards cutting them eventually.
The other thing worth pointing out is that this is trying to play as many lands per turn as possible, So Exploration, Azusa, Lost but Seeking, and similar make an appearance here. I especially like Mina and Denn, Wildborn since they let me pick up deserts to replay to get more tokens.
I don't have much in the way of playing lands from the yard other than Hazezon and Ancient Greenwarden. The latter is mostly here for its ability working with triggers anyway. This is because I have found that I don't often have much for lands in the yard because Hazezon more or less takes care of them. At least, he takes care of the ones I want.
Card draw is another avenue I am trying to finalize. I have a few options that draw based on the number of creatures but I don't really like them because the intent is to create a bunch of creatures which means I could draw half my deck at some point but may not be able to use everything. So I just end up discarding 30+ cards. I could work around this by adding something like Cryptolith Rite but I am not there yet.
Things like Nissa, Vital Force and Huatli, Radiant Champion play into existing themes to get me cards. Toski, Bearer of Secrets is also one of my favorites so far to get cards. I likely end up cutting Collective Unconscious at some point.
Another really good card is Jetmir, Nexus of Revels as he can really beef up my token army to allow for swinging for lethal. I probably should have Akroma's Will for a similar effect.
And, finally, Impact Tremors, Warleader's Call, and Purphoros, God of the Forge are ways to get a lot of non-combat damage in as needed. Then hopefully I can swing with a smaller army to finish people off. I do have Goblin Bombardment for a similar effect but where I can sac all my creatures to get rid of things. It might end up being less impactful than I would like so who knows where I land with that.
I don't have a lot of removal options right now so I might add more in later depending on what i think is ultimately needed.