Oloro EDH deck

Hi all,
I was wondering if anyone would be interested in taking a look at my EDH deck. I ran with the life gain mechanic along with, I think, some good removal and one combo that almost seems quite unfair   It wins quite a bit in casual play, but when talking about it to another player, he commented that my deck would lose rather quickly since he runs Erebos as a Commander.  Anything I could do to tweak my cards to handle Erebos?  Also, any other suggestions would be greatly appreciated! this is my first EDH deck that I have actually put a lot of effort into and, up until now, was pretty proud of how it turned out !  Thank you in advance for any help/advice!
http://deckbox.org/sets/727881