I think Confused Wolf is correct, but it's a surprising conclusion to me.
It means that magic is fairly weak in the LWRPG. Brothers of the Crystal Star really can't do all that much damage with lightning hand, even at higher levels. Lots of Valkeros magic specifically gives them bonuses to damage from their stat modifiers to address exactly this, I imagine.
This seems to contrast sharply with the books, where magic is extremely powerful. Banedon and Lone Wolf use magic to devastating effect on several occasions, often instantly killing their opponents.
Instead of that, Lighting Hand is a short range spell that's relatively weak. I wonder why, especially since it costs endurance.