Lightning Spell?
 

Well, I was doing a Mara KQ on my fighter today, and we were at the end where you fight Mara and Marlone. I wasn't the tank, so I started attack from behind, when the tank noticed that one of the mages were using lightning. We told her to stop, but she claimed that, "I heard that lightning only removed DoTs from archers, and a high leveled archer told me." <--- Something like that.
Mara started going after her and it was all chaotic.
When the clerics finally revived everyone, we started killing again and won.

So anyways, does lightning really attract aggro? (From what I've heard, it does, but I'm just making sure. >.>)

Lightning will kill poison from the archers. However, It is the poison that turns the mobs a dark color. Not the poison that turns them green. I do not know the actual terms.

It probably attracted aggro because it does that bonus damage...

EDIT: Actually it removes the Archer's Bone Shot (bleeding) damage. Which is rather annoying during Dragon KQ.

Oh...
But I'm still confused here. Does it attract aggro, or does it not is all I'm asking. ><

The agro really depends on the stat make-up of the mage and how well the tank knows how to KEEP agro. Anyone can pull agro at any point with any skill if it crits and they are the ones creating the most damage and the tank is not mocking and taunting like they should. I would say that it might be hard for thetank to keep agro if the mage was a much higher level, but with the level limits in KQ, it should not be a matter of one over-powering the other.

Oh, thank you. :]

The more damage you do, the more chances of you pissing the mob off and having them run after you.

It's not fully damage based, crits count a lot more for aggro, irrespective of if they do rubbish damage or not, also some skills, usually those that cause status effects, also cause relatively high aggro. It's possible that certain skills have a default minimum aggro value (like snearing kick, mock as the best examples, but also other things like firebolt) when used.

Lightning has a chance to kill bleeding effect, but I tend to just ignore archers in KQ who complain and cast it anyway, since I rated my 300ish +117 higher than me not casting nothing, and letting their thing tick the full 12 times for... I forgot how much damage it was.

Why not just wait for the bleeding to wear off, then cast it? Not that hard. >_>;

^ Apparently it is.