Have you thought about using Hangarback Walker? You have quite a few ways to put more counters on it, and you get fliers when he dies. Plus, you have ways to sacrifice it for the tokens as well, so I see no reason why you shouldn't include it.

Also, would Awakening Zone be a thing you're interested in? It gives you ramp early game and chump blockers late game. Mana in commander is great, just in general anyways. Sooooo, yeah

I went looking for the Walker at my local store and basically went "Oh, I'll wait for it to cycle out."

Awakening Zone, though. I keep forgetting to put on my list!

I think you might like to add Nemata, Grove Guardian who creates and allows saprolings to pump when they swing.

My recommendations for cuts would be the duplicates of Kiora, Garruk, and Ob Nixilis, considering only one can be in play at a time.

You asked about a cut to make room for Blade of Selves. Personally, I'd drop the Avenger of Zendikar. He's really expensive for not that many tokens, and it frustrates me that his counters are only good on Plants.

I'm with shaftdiggity on dropping some of the Planeswalkers, though for a different reason. I actually don't mind having duplicate Planeswalkers in hand. They draw so much hate in my group, I've never had one last long enough to worry about having two on the table at the same time. But because of that, I would drop the two that can't ultimate even with with Doubling Season out: Kiora, the Crashing Wave and Ob Nixilis of the Black Oath.

My new favorite Timmy spell, for your consideration: Pathbreaker Ibex ... I think it may set a new bar for Tim-tastic closers!

shaftdiggity: Too much "long time investment" on that one. I'm more of a "BOOM suddenly a thing" kind of player.

clayperce Avenger is, on average of lands without a doubler, 7 mana for 7 1/1s and a 5/5, and I only really need one or two landfall (sometimes none with Ivy Lane Denizen in play), and after only a single token doubler, things get super messy.

And I have the goat in my Maelstrom deck for profit, right now, as it's the only real useful stampede affect that deck can run.ALL: I think I will end up removing Garruk Relentless  ^Flip because while he's a really neat card, I have found that he is difficult to profit from as his first usage is hitting one of my own little tokens so he can flip or (in case of doublers) hitting someone else's one thing sometimes and getting a flip.

DudelRok, yeah Avenger is a great card. Assuming Vorosh has probably punched someone by then though, you still may get better value and a splashier play from another goat or even a Fungal Sprouting.

Glad though in the end it was a Garruk who got the axe. I've got even more Vorthos in me than Timmy, and I never liked that guy! :-)

Sprouting got the axe because it doesn't work "by itself" and while I do have some cards that require I have a really big dude, they draw me a lot of other cards, so waiting is super worth it.