Pulse shock runes - weird and useless? as for now, you get access to explosive bolt pretty early (lvl9) and it is SO STRONG. why on earth did they put this this early while all the other rune effects seem to suck? and can someone explain to me what the difference between "piercing orb" and "living lightning", except that living lightning is unlocked a lot later and seems to do the same but a lot weaker?? wtf??