I never got the update email for this post! Thank you for posting an update.
It looks like these are the changes you made:
Grand Coliseum -->
Path of Ancestry
Fabricate -->
Search for Azcanta
Dissipate -->
Disallow
Nicol Bolas, Planeswalker -->
Nicol Bolas, God-Pharaoh
Door to Nothingness -->
Approach of the Second Sun
Grand Coliseum --> Path of Ancestry
This swap makes perfect sense. Good call.
Fabricate --> Search for Azcanta
With Door being swapped out for Approach, this swap makes sense, too.
Dissipate --> Disallow
More modes!
Nicol Bolas, Planeswalker --> Nicol Bolas, God-Pharaoh
Wait, what's happening here? Does this have something to do with the game state when you cast Bolas? I've won on the back of Planeswalker Bolas enough times that I had not considered making a swap.
Door to Nothingness --> Approach of the Second Sun
I'm with you on this one, too.
Have you considered
Assassin's Trophy?
I am running Dig Through Time in the Brainstorm slot. It's a trade-off, but Dig looks at a lot more cards.
Is Bant Charm still your jam? It does a lot of things, but I put
Anguished Unmaking there and never looked back.
Memory Plunder looks spicy.