I would swap the top end colossus for a couple of
garruks horde. By the time you get to that stage you need card draw rather then a big creature you may not find. Gives you somewhere to dump all the mana from the acolytes.
Windstorm I wouldn't main deck if you are already going to have a playset of deadly recluses.
Deck needs more big threats. Somewhere to spend all the mana you are going to produce. 3/3 centaurs and 2/2 decoys arent very scary.
scrap the
fog. why avoid damage when you are green. just punch them in the face harder then they are hitting you
Mine has been very strong - check it out here for more tips -
https://deckstats.net/decks/7103/40089-green-devotion/en