w/u/g midrange

the deck seems to have pretty decent matchups against most of the field and post sideboard it gets much better. ive played over a hundred games with this deck and feel it has the tools to deal with most threats in the exact way you want it to. you have a favored matchup against jund and rdw post sideboard and naya isnt all that bad either. i havent played a single game against mythic but im sure o-ring, mind control and doj would be boarded in. it does have a tendency to lose to u w control but with a few changes to the board you can easily change that depending on your metagame. luminarch ascension, cancel and spreading seas seem like solid options. seas could also serve as an decent option against other decks. any comments or suggestions would be greatly appreciated.