I got to play against the #1 rated player on Xbox the other night. Nice guy, he only plays Jund midrange. I tried my three best decks against him but couldn't make a dent

Izzet Burn, i assumed this would win but his lifegain with the gatekeepers and constant removal stayed ahead of my vapid snags

Dh50's mono red dragon burn deck. One of my favourite decks but couldn't beat the lifegain

Hakeem's Azorious combo - this was the closest I got but I didn't have enough counters

Anyway after three straight losses I didn't really miss that game

My strongests decks on M2015 where :
* an Azorius cloudshift + Talrand+ arqueomancer and I even got that shapefhifter guy for lategame.... it that was a blast
* an auto mill with spiders ftw
* the obvious Izzet with kiln fiend and that guy that does 2 damage when casting an instant or sorcery.

The two damage guy wasn't as nuts as Pyromanxer, Kiln Fiend and Talrand. They were all stronger I think as triggered abilities

My deck did not go all that wide for him to shine