Cheers @Razmus! Came back for my first expansion from Witchwood and decided to give this deck a go after running a Mage and Warlock for a bit. I've had absolutely huge gains on the standard ladder. Managed to climb from Gold 10 to Diamond 4 so far in the course of a week!
Kolkar Pack Runner has been huge in clearing other early game matches like Paladin, Hunter, and Rogue. The combo of autosummoning Mankrik's enraged version if you play Barak Kodobane is really nice as well. Even then, Barak himself is absolutely huge when it comes to generating card draw. I've had an extremely high winrate over other hunters who tend to stall out without it in their decks.
Edit: So far I've made it to Diamond 1 a few times now, but still yet to crack legend!