nice combos +1!

I made a control deck very similar, but based more on Seth Manfield (whitout black): jeskai control(post rotation)

please take a look!

I feel like your deck is trying to do too many things, which is why i disagree with 5CC in the current format. You could achieve the same result by just going UWR or another 3-color combination, while easing up the mana (i gotta say urborg does wonders there though, i could cast bile blight off of temple of epiphany + temple of enlightenment thanks to it).

Keep in mind Narset comes down turn 6 and Goblin Rabblemaster decks are almost certain to be a thing.

Also, gotta keep in mind: Polymorphist's Jest changes creature type, but not name. So the blight + jest combo doesn't work. learned it the hard way.