What about Quickling for mono blue? It can be a great way to return creatures in danger of being destroyed plus it's a 2/2 flying creature. The same goes for Jeskai Barricade.

I'll add both of those, thanks.

Disciple of the Vault is a common, not uncommon

Fixed, thank you.

My favorite mono green commander is Karametra's Acolyte, to ramp into all the stupidly large green creatures.

Added to the list, thanks for the suggestion.

Drove of Elves for that elf tribal deck

nevermind, totally didn't see it in the list the first time around

I love pauper edh, I'm glad more people enjoy it as much as me, I have a Mistmeadow Witch EDH that can often hold its own against full powered Edh decks I hope more people start playing this format.

Young Pyromancer

Added, and yes Leumas, I love Pauper EDH. I was hesitant to play at first but it turned out to be a lot of fun. Also very cheap and accessible.

How about Eternal Witness as a commander?

Seems good, added to the list.

By your description of evasion as highly valued in this format, Deepchannel Mentor should be good?

Possibly. There is not a lot of ramp outside of green and Deepchannel Mentor is 6CMC. It would probably also require a decent amount of creatures and most of Blue's creatures are killed by the format's common wipes. But you should give it a try and see how it goes.

Spinebiter is a very strong duel-general for one-shotting your opponent.

I run Auriok Salvagers as a general. He's so good, you should list him. (uncommon in mirrodin)

Added both, thanks for the input.

A hilarious Boros commander IMO is Flamewright. No one ever sees it coming. Play defender tribal with Vent Sentinel as your win condition and go to town. They'll never see it coming.

Seems like a fun commander, added to the list.

Sorry for double posting but I can't believe I forgot one of the greatest mono-white uncommon ever printed Mother of Runes.

Has anybody tried Monastery Swiftspear? Seems to me that it would be very strong in an RDW-type burn list. Plus common artifacts and enchantments are probably solid here, too, since they trigger prowess.

Seems like Frenzied Goblin might be funny. Not the best, but funny nonetheless.