Works pretty well, need a sideboard. Any sugesstions would be helpful.

3 Arbor Colossus
4 Elvish Mystic
4 Experiment One
4 Kalonian Hydra
3 Prime Speaker Zegana
4 Prophet of Kruphix
4 Sylvan Caryatid
4 Voyaging Satyr
3 Mizzium Mortars
4 Domri Rade
4 Breeding Pool
5 Forest
4 Steam Vents
4 Stomping Ground
2 Temple of Abandon
4 Temple of Mystery

This strikes me as needing Nykthos, Shrine to Nyx in some quantity to help with the devotion to green you're running.

Other than that, I guess it's worth a go.

For the SB, I would imagine you could go with a bit more removal and such. So I would probably go with something close to the following:

2x Pithing Needle
2x Cyclonic Rift
2x Fade into Antiquity
3x Essence Scatter
2x Izzet Staticaster
2x Bramblecrush
2x Primeval Bounty

This would give you a lot of added versatility:

Pithing Needle for problematic walkers and/or creatures (think Aetherling)

Cyclonic Rift if the opponent can flood the board or against devotion decks

Fade into Antiquity for problem enchantments and those pesky enemy gods

Essence Scatter for soooooo many opposing threats - nothing like countering a Gray Merchant

Izzet Staticaster flash defense that can deal with mana dorks, Elspeth tokens, and a bunch of other stuff

Bramblecrush for problematic enchantments, artifacts, walkers, even lands...

Primeval Bounty if you need some life gain or just have issues with stalling out, this will single-handedly beat mono-black devotion and will give you serious traction against control

I hope that helps...

You're basically GR devotion here, with blue. I think not having the nykthos and the burning tree combo potential is hurtful to the deck. IMO replace exp one with burning tree. The extra mana you can get is pretty ridiculous.

TBH, i would really just go with the straight GR red list, you're replacing garruk for prime speaker and polukranos with the prophet. You can do some neat things with the prophet and draw a bunch with prime speaker, but you're mucking up the manabase just to include the blue and I don't think the deck needs it.