SK Disease Cloud = Aggro? Huh?

[Barnabas]

My understanding of aggro, I thought was a bit clear (built by taunting, damage, sometimes healing, but someone mentioned today that Disease Cloud builds aggro.

I don't quite understand how. It does 1 tick of damage over time. There is nothing in the spell that seems to indicate it generates aggro, so I guess it's bothering me that I don't understand how a 1 damage DoT spell is a staple for building aggro for the SK.

If someone could please explain, I'd greatly appreciate it. Thanks [You must be logged in to view images. Log in or Register.]