So Herobrine is often seen as the Devil, right? Which would imply that he uses black magic often

Herobrine specializes in blood magic, dabbles in witchcraft from time to time, and plays with dark magic

Plus his pyromancy, ability to bring back the dead (sometimes he does this but it always drains his energy so he needs to be at full power), and any Creator powers he has, like Creation, mind reading, ability to change his aura's strength, and a sixth sense to detect incoming danger

He also has a deck of tarot cards, a gift from Atropos. These cards can predict how someone dies and can even create mass destruction when used. He likes to play with them when he's bored so don't accept any offer when he has a deck of cards out

Of course, humans can be utter idiots and will steal those cards on occasion

Herobrine flips out when this happens cause too many people die and it's all his fault since he wasn't keeping those cards safe and he doesn't want all the extra paperwork

Oh don't worry, Notch balances him out so both of them are freaking OP

(Stolen tarot cards will DEFINITELY be a one-shot cause it will be really fun to do)