So I have changed it a lot since I first created the deck, then after seeing the RPTQ's winner's version which in it's core idea isn't that far from my own, I decided to pick a thing or two from him.
Most notably, I picked up Angel of Invention. Regal Caracal used to be my lord because I hadn't thought of Angel, and I had much more cats in this deck, now though every creature gets buffed regardless of type.
The Refurbishes were the best thing I took out from the W/U God Phraoh's gift, since they allow me to tutor any artifact form the graveyard to the battlefield, including GP's Gift. That allows me to reduce the number of Gates to 3 and put 3 GPG instead of the two I had before. I also allowed myself to put in Oketra's monument. My High cost cards are all 5 drops and white, so getting one with a Trophy Mage gives me huge value, since I also have lots of 1 CMC cards.
FTM I decided to keep the contingency plan, instead of strategic meeting, since they allow to search further ahead in my library, and allows me to keep lands in my library in times of need.
Thraben Inspector's were thought of a long time ago, but were disregarded, due to me thinking that I would never have the time to use 2 mana to crack a clue. Oh boy how wrong I was. Last FNM, didn't end that well cos of that.
My Sideboard can be switched in case of a mirror matchup. Or can bring minor changes if somebody shut the deck hard. I have for example found that against Temur, First round is a blow out win in this deck's favor. However, from the moment they are able to bring in Rhonas, and artifact hate, it gets very hard to play. Wings of rebuke and Baral's expertise can deal with Rhonas, and Confiscation Coup is completely broken against any of the gods, as it leaves you with enough energy to use with aether hub and put out any color you wish to have.
Also do not be afraid to completely bluff your opponent, during the second round.
It works very well against Grixis control. Just get all of the elements of that relate to GPG out and bring out whatever you want form your sideboard, mostly Crook of Condemnation, which shuts down Torrential Gearhulk's ability. Funny things happen, when your ooponents has used it himself for turns on end, when he realises that you also got one out, and that you do not particularly care about your graveyard anymore.
U/W Monument is an even matchup, although it wins if you both have your best hands. I'd recommend bringing in Baral's expertise, and Winds of Rebuke, since they can deal with Monuments, Westvale Abbey, and other annoying things.
The funniest thing to do in a mirror matchup is just to get B. Expertise, winds of rebuke, and Confisctation Coup, and wait for the tokens to come out. It's dreadful for them.