there a small problem tanking on champion there no skill that generate aggro. knight or warden do have skills that generate more aggro than us
Last I checked, Shock Strike has a 10x agro multiplier. And the earlier mentioned Rune Energy Influx is a double-and-more agro from all other skills. I personally verified this using Threatmeter hmmmmm.. maybe a month or 2 ago, I forget. You think these changed Tung?
I won't comment on knight/warden agro - don't know enough about it.
PS. Rune Pulse is actually "bugged" in that the tooltip says it gains additional agro if used while in shield form. It doesn't. (also according to Threatmeter)