Your best win condition is to stick an Unholy Annex and simply run them out of resources, but it won't be easy to keep a Demon in play (and if you do, you just win anyway) so preserving your life total is critical
The new Whispers in the Well set has loads of good cards that will fit right in, so the occasional booster pack as a treat works for collecting and playing
All in combo decks are well suited to take advantage of narrow, polar cards and some flavours of cheat in decks are good examples of ones that might want Orcish Lumberjack
The short of it is that you can exile her at the beginning of your upkeep, and then whenever a land enters, you can either bring her back or put a voyage counter on her
With a proven track record, a dedicated player base, and excellent new cards in set 6, it might just be the best deck for you to take to your next tournament.