If you go to the toucharcade article for this release there are a few other cards along with kobold hermit. I don't know if they're real or if they are just theorycraft but they seem to go along with this card.
You basically get a single go at a Justicar Hero power with a bonus 1/1. If you choose Searing Totem, this is basically a worse Alleycat but the flexibility of being able to choose from 4 options redeems it a little bit. The most useful ability seems to be Spell Damage but if you're playing this in your deck you really have to ask yourself "why aren't I just using Tainted Zealot. Maybe this could have been stronger if it had more stats but they may have tried that and found it to be too good.
Its ok with Evolve I guess.
TLDR; Pretty innocent, unimpressive card. May sometimes do some cool stuff in Arena