Blue/Green in the way of aggro is a bit more fun in commander than combo control. Very happy to see that tokens trigger this, went from mediocre to absolutely insane. Right off the bat Awakening Zone and From Beyond give experience counters.
Nissa is insane in my deck. Way too much card value for 3 mana, especially more than a Borderland Ranger could ever accomplish. + Draw/Ramp engine, - big beater maker and win con ult are all fantastic. Maybe not worth the money right now, but definitely worth the $20 I got it at.
It'd probably work better funnily enough. It'd be similar but I'd be able to be more zombie tribal and aggro, I don't really have an token-aggro deck so I've been tossing around the idea of commanders I could build. Mono B I haven't tried to build and seems pretty fun.
White doesn't produce alot of card advantage alone, so you'd want a general to make up for that. I'd say Darien. Tokens + Tribal seems to be something you don't really have.
For someone who isn't on your list Michiko Konda, Truth Seeker is amazing.
I love Masako the Humorless for being weird and flavorful.
Moved to Commander
-Feyd