6, 18, 24
6. Books and magical items. Seriously. He has some crazy shit, which he hides in a crazy-ass pocket dimension that his old teacher created.
18. To a certain degree, yes. Torm has looser moral standards than most, but refuses to take actions that will lead to the deaths of children or massive amounts of death, like a large explosion.
24. Well, dur. Magic exists. Anyway, as a warlock, Torm uses Fel magic, both the purest and most horrible form of Arcane. To cast practically anything, he gathers the energy in his body like a normal mage, with a clear focus on what it’s supposed to be, and lets it go with a minor incantation or such. However, the magic becomes corrupted on its way out, thanks to the fel-energies corrupting his soul, and twists into a more powerful version of itself, like felflames or a blast of concentrated chaos. On top of that, he can do standard warlock stuff, like summoning demons, or surrounding himself in a shell-like barrier, through personal sacrifice.