Spectre Ward was pack 1 pick 1.  I tried to go white/blue but just a few cards in, it was obvious that black was underdrafted, so I switched.  Pack 3 pick 1 was Ob Nixilis.

Both the lifegain and aura combos worked really well.  Even Paragon + Triplicate won me one game.  I don't think I was ever more than 2 life below my opponent, and I was usually over 20 life with each win.

Ob Nixilis only hit the board in one game.  I never drew Seraph.  One opponent mulliganed down to four, then I hit him with Mind Rot.

I only sideboarded once, versus someone with a Hornet's Nest.  I replaced Mind Rot with Festergloom to have a way to clear the potential pile of 1/1 deathtouchers, but he didn't play the card again and I didn't draw Festergloom anyway.

Overall record: 3-0 match, 6-0 game.