While I've been playing my Conj for almost 4 years and know what most of my spells do, I'm a little new at the "End Content" game.
While attempting to join a raid, I was told by the raid leader (A Conj also, who's name will remain anonymous because he was a Dork Smoker) that Conjuror's don't stack. I was quite taken aback by this comment. I didn't realize there were any issues with Conj's spells causing issues with other Conjuror's in the same group or raid. I know Shaman's Wards are an issue, but as I looked through my spells, buffs, and debuffs (short list there

), the only one I knew would be an issue is the Damage Sheild.
What am I missing?