My list, then I will explain some card choices.
Gush B/U/GMaindeck:
1 flooded strand
4 polluted delta
2 misty rainforest
1 strip mine
1 wasteland
4 island
2 undergruond sea
2 tropical island
1 tolarian academy
2 garruk wildspeaker
1 inkwell leviathan
1 vendelion clique
1 trygon predator
1 mox diamond
1 lotus petal
1 sol ring
1 mana crypt
3 chrome mox
4 force of will
1 misdirection
3 spellpierce
3 gush
1 tinker
1 yawgmoth's will
1 ponder
1 brainstorm
3 preordain
1 fact or fiction
1 mystical tutor
1 gifts ungiven
1 echoing truth
2 repeal
1 brainfreeze
1 vampiric tutor
1 demonic tutor
1 nature's claim
1 regrowth
1 fastbond
Sideboard:
2 pithing needle
1 nature's claim
1 seal of primordium
1 hurkyl's recall
1 mindbreak trap
2 thoughtseize
1 sower of temptation
1 darkblast
1 massacre
2 extirpate
2 yixlid jailer
Originaly I had only one Gush main and no fastbond or brainfreeze (1x gaea's blessing,1x mana vault,1x meditate).
I wanted to build a controllish deck, then they unrestricted Gush and so I made few changes...^
When I initially had the idea to put together this deck,prior to the un-restrictions,I wanted to stay away from Vault/key and Jace,TMS and stick to B/U/G.
I also wanted something that would be friendly to my wallet

In a proxy tourny, this would look totally different though.
I am not quite satisfied with the sideboard. I tried to evenly distribute cards to board in a random meta. This will change with further tests.
Cards that didn't make the cut:
Imperial seal- Does nothing my other tutors can't do better but might consider it later.
Merchant scroll- Too slow. I shouldn't have a hard time finding what I need with all the draw in the main.
Crucible of worlds- with Strip/Waste it was difficult not to include this but without full power its too slow. imho.
Brainfreeze#2- Due to last minute additions only single copy made it. Would a second copy be much?
Tendrils of Agony- Been playing TPS for too long, need to break away for a while
Deep analysis- Too slow. If I expected alot of Control decks maybe.
Wincon:
Garruk Wildspeaker- Sure its 4cc against Shops but it lets us untap two lands each turn or summons 3/3 beasts either to tap for Tangle wire or sac to stax.
Also works well with Gush

Again, needs further testing but I wish to make this a community activity of innovation.
All thoughts and suggestions are welcome.