I'll suggest the following changes
-2 Gaea's Blessing
- 4 Mana Serveyance
- 4 Abeyance
- 2 Oxidize
- 3 Recycle
- 2 Sacred Ground
- 2 Celestial Dawn
- 4 Gemstone Mine
- 4 Tundra
- 2 Tropical Island
- 1 Enlightened Tutor
Updates in bold and card change reasoning below:
//Mana - 24
4 Underground Sea
4 Polluted Delta
2 Flooded Strand
2 Island
1 Tolarian Academy
1 Swamp5 Moxen
1 Black Lotus
1 Sol Ring
1 Mana Crypt
1 Mana Vault
1 Lotus Petal//Combo
3 Dream Halls (You only want to see one)
3 Painter's Servant
1 Tendril's of Agony
1 Grindstone//Draw, Search and What have you
4 Thirst For Knowledge1 Vampiric tutor*
1 Imperial Seal*
1 Mystical Tutor*
1 Timetwister
1 Windfall1 Demonic Tutor
1 Ancestral Recall
1 Merchant Scroll
1 Time Walk
1 Yawgmoth's Will
1 Tinker
1 Memory Jar
1 Rebuild or Hyrkyll's Recall1 Brainstorm//Protection
4 Force of Will3 Duress4 Mana Drain
Explanation of changes:
- 2 Gaea's Blessing: While going off, there should be no reason why you'd run out of cards, especially with Yawgmoth's will in the deck.
- 4 Mana Serveyance: Enough draw and additional artifact mana replacing lands will help you build your storm count. These are 4 dead slots.
- 4 Abeyance: Adding a third color to a deck like this is probably unnecessary, unless you're splashing red for wheel of fortune.
- 2 Oxidize: Adding a fourth color (green) is a poor choice unless you are bringing in Tarmogoyfs from the board.
- 3 Recycle: If it was worth playing anything like this, you would play the timeshifted version (Null Profusion) because it is in a synergistic color with blue. Yawgmoth's bargain is better than Null Profusion.
- 2 Sacred Ground: Unnecessary unless you expect to see your opponents actually play and ramp a smokestack to some arbitrarily large number. Also very off color.
- 2 Celestial Dawn: Why would you play this when painter's servant, a functionally similar and easier to cast card, exists?
- 4 Gemstone Mine: On color duals + fetches and basic lands are better.
- 4 Tundra: White is a useless color in this deck.
- 2 Tropical Island: Would be good if you were bringing in Goyfs post board.
- 1 Enlightened Tutor: Off color and you're already running 3 card disadvantage tutors.
So with the blue/black build, the object of the game is:
1: Survive the first 2 turns (Duress, Drain, Force)
2: Find and Cast Painter's Servant
3: Find and Cast Dream Halls.
4: Play Yawgwill / Timetwister / Windfall / Tinker + Jar to build storm and win via tendrils, or tutor up the lone copy of grindstone and win.
If you decide to actually try this, instead of a concise, already established tendrils build, then by all means, good luck.

EDIT: I accidentally made the list 61 cards. Cut something, if you dare.