Now I will not take credit for building it because I didn't. I believe it was found on a different site, but really have no idea my friend showed it to me and i fell in love.
Good. 'Coz we built it
It evolved (strange as it may sound) out of RectorTrix via Rectortendrils, around the same time as Long.dec came into the picture. It can be viewed (as many have pointed out) as the natural evolution of Academy builds. Long.dec was undoubtedly the better deck (being more than a turn faster on average) but this was a solid metagame choice as it owned Long. I called it TPS which stands for The Perfect Storm or Total Piece of Shit - depending on how you perform. We've taken it in different directions - Marco added white for Abeyance etc. and I attempted to merge it with what was left of Long.dec. This basically resulted in a freak ass Long build with a maindeck Will and some TPS elements. You can find a tournament report
here if you wanna read up on how the deck failed at the PT Amsterdam :-p
What you posted is a pre-restrictions build (not that they hit the deck or anything) that was piloted by my mate Marco to victory in Duelmen, among others.
I'd try replacing 1 of the Recalls with a Chain maindeck. That way, you've varied the mana cost (useful when facing a Chalice). Chain is at LEAST as good a spell count-upper as H. Recall is, and way better than Time Walk in this build. Also, in spite of what Marco says, I am NO firm believer in Ancestral Knowledge...I'd drop bith for the 4th Brainstorm and a MD Windfall. And Dimishing Returns has done wonders for me in the SB.
On Retract: that card only serves a single-sided purpose: accelerating your mana (and yes, it does so quite efficiently) and upping your spell count. But the whole reason we played H. Recall at all was that fact that it was a MB answer to a card that stoped you dead - Chalice. The fact that it accellerates mana and ups spell count were simply 'bonuses' that made it good enough. That said: it's probably good enough to more or less 'build a deck around'.