I will preface this with a simple statement: Land destruction is mean.
Round 1: Soul Sisters 2-1
Round 1 went by okay, nothing unexpected and nothing to terrible. Got by with minimal effort.
Round 2 I lost, only because my opponent killed me the turn before I untapped with 6 mana and could Planar Cleansing. 3 white sources, 2 others untapped, last one tapped. Serra Ascendant is unforgiving. Not having any fogs is bad as well.
Round 3 I won again, minimal effort required.
Round 2: Splinter twin 1-2
Round 1 was... interesting. I had no idea what he was playing, and then he threw down a Bounding Krasis and then plopped a Twin on it the next turn... I fogged as he swung for 21, and Detention Sphereed the Krasis. After that it was a simple matter of fogging and sphere-ing whatever he put out.
Round 2 was... more interesting. He sideboarded out his twin combo and put in Crumble to Dust. I wasn't happy when I found that out. He exiled my Simic gate, making it impossible for me to win.
Round 3 see Round 2.
Round 3: Dark Jeskai 1-2
Round 1 I won, I don't remember much about the game because this was the point in the night where I was getting dehydrated and having a bad headache... I don't think there was much going on except that I won.
Round 2 I lost, at some point he put out a Pearl Lake Ancient and then from there just countered everything I did.
Round 3 I lost, basically Round 2 but I made some stupid mistakes.
Round 4: R/G(?) Tron 0-2
Round 1 I wasted two Detention Spheres on two different Wurmcoil Engines and didn't have anything to get rid of the Ulamog, the Ceaseless Hunger he put out like turn 5
Round 2 He dropped a turn 3 Karn Liberated, exiled some land. Sphered it for a couple turns, he cast Ulamog again and everything fell apart from there.