Hearthpwn

This has been my most successful attempt at a relic demon hunter. Its performing really well for me against control shaman, quest priest, quest hunter, and denathrius druid. It does seem to struggle against mage, though. Absolutely atrocious against naga priest as well. Imp warlock feels like a toss up most of the time.

It's all about drawing as fast as possible while chipping damage and keeping the board clear with fel spells. Theotar and Mutanus are your win cons in longer matchups that feel inevitable (quest priest, any deck that uses denathirus), but Jace can also offer a huge burst to get you over the line if you're ahead in tempo. 

I tend to try and relic vault with relic of dimensions and save relic of phantasms to build scary boards that aren't easy to clear later in the game.

Thankfully the deck doesn't need to develop a board to win against things like control shaman so you can bait an early snowfall guardian, or you can theotar it. Control shaman can feel really bad if they get a good evolve early, though.

The deck only really feels bad when you're not hitting your draw or your spells aren't lining up for clean minion clears.