I went X-1 this week at weekly legacy with nearly exactly my post GPT list. the deck was:
// Lands
4 [MR]
Cloudpost1 [LG]
Karakas1 [WWK]
Eye of Ugin4 [ZEN]
Misty Rainforest4 [SOM]
Glimmerpost1 [WWK]
Bojuka Bog1 [ON]
Island (1)4 [R]
Tropical Island1 [IA]
Glacial Chasm2 [TSP]
Vesuva1 [AVR]
Cavern of Souls1 [R]
Forest (3)// Creatures
1 [ROE]
Emrakul, the Aeons Torn1 [BFZ]
Ulamog, the Ceaseless Hunger4 [M11]
Primeval Titan2 [FD]
Trinket Mage// Spells
4 [5E]
Brainstorm3 [UL]
Crop Rotation3 [CHK]
Sensei's Divining Top2 [US]
Show and Tell2 [10E]
Pithing Needle3 [OGW]
Warping Wall2 [SH]
Ensnaring Bridge2 [FD]
Engineered Explosives2 [ZEN]
Expedition Map2 [FRF]
Ugin, the Spirit Dragon1 [ME4]
Candelabra of Tawnos1 [ALA]
Relic of Progenitus// Sideboard
SB: 4 [NPH]
Surgical ExtractionSB: 3 [TSP]
Krosan GripSB: 3 [JGC]
FlusterstormSB: 2 [THS]
Swan SongSB: 1 [SHM]
Faerie MacabreSB: 1 [OGW]
World BreakerSB: 1 [C14]
Reclamation Sage
I wanted to test World Breaker vs Reclamation Sage. I'm still not sold on one over the other, so I might just stick with a 1-1 spread in my 2-of creature artifact/enchantment destruction slot.
This sideboard is one of my favorites yet. It is really 3, 5-ofs with enough overlap and splash to work in most matchups. I might go to 2 grip 2 world breakers if I enjoy it enough, but I wouldn't go below 3 total grip+etb destruction abilities (reclamation sage/bane of progress).
My Loss was to 3 games vs Grixis that were extremely close, despite a mull to 5 on me game 1, on him game 2. Both losses came down to him using every card in his hand to just barely edge out a win as I was stabilizing, with extremely minimal fixing. Despite the loss, I feel very confident in this matchup. (I faced it twice last weekend and 2-0'd it both times) Even after our games he was boggled at how outlandishly perfect his draws were.
As it is, this deck is both very tight, but allows for incredibly bad draws to still work your way. This is probably my favorite version of the deck to date. If you're looking for a solid state of the deck to bring to a GP, this is it.