Hey hey I just ordered a phyrexian proxy Atraxa with a masterpiece border for a few bucks. Can't wait to get it! Check out atomicashes on instagram he does a bunch of artwork for cards pretty cool stuff.

I feel like extra protection you can run Spike Weaver. It gives you complete combat damage protection and you are constantly putting counters on it through multiple sources.

He cut Spike Weaver because his meta is too anti-creature to make it optimal

Do you have a problem of draw? I'm considering Kiora, the Crashing Wave Kaya, Ghost Assassin Dovin Baan Skullclamp (for token generator Sword of Fire and Ice (Can change to Voltron mode and Draw)Some Planewalker I've mentioned maybe leave it to GY. Just for draw or pillowfort by situation.

Another Replacement is Moat over Sphere of Safety. with cheaper mana cost when Atraxa protect the Sky.

Phyrexian Tower I think you need it for Academy Rector sometimes sacrifice token for mana.

Have you try Omniscience? Maybe add it for Academy Rector.

No issue with draw.

Moat is way, way overpriced to get right now.

Phyrexian Tower is on my to test list

Omniscience was cut long ago for both its CMC, clonability, and win-more-ness.

One card I've grown fond of as of late is Obzedat's Aid. It lets you recur a bunch of things that aren't normally recurrable; if they blow up Doubling Season, for example, that's not something you can normally retrieve easily but Aid gives it right back, straight into play. Since your permanents cover basically everything you need to do, it's really good in the walker/enchantment based lists.

On the flip side I haven't been impressed by As Foretold yet. It's almost just a very slow mana doubler in a deck like this. I think you need a lot more instant speed interaction for it to be a good card. I'm looking much more at a Blue/X permission style deck (Mizzix, maybe) as the right home for the card, not so much a tap-out deck like this one tends to be.

Yeah I've began to notice the issues with as foretold as well, I might swap them