What does lighting fury do?

[Wyrm]

The more pierce you have the better. It'll still work without it, but think of it this way: There's a pack of 10 enemies laying around. 3 are lined up in a row. You have a level 20 Lightning Fury, so you have more than enough bolts per hit to hit all of them. You throw a javelin and hit the first enemy, 9 extra bolts fly out and hit the other enemies. The javelin pierces and hits the second enemy, 9 more bolts fly out. Again it pierces, another 9 bolts fly out.

Against a large group of enemies it has no equal. Well, maybe Blessed Hammer. Against a single enemy... well... make sure you put a point in jab, or have a bow on switch.