At least you have a proc. On disc, I don't really get procs unless I take Surge of Light, everything else is totally based on what I do...wait, does divine aegis count as my proc??

I wish I got instant proc smites at some point.

Disclaimer: Have never been Disc, and not qualified to comment really. But the orbs aren't procs in the sense that Holy can have through talents, making things better; the orb procs are actually a *part* of our Mastery.

When on my Holy Pally, Kitty Druid, Fire/Arc Mage, I don't have to keep the Mastery going -- it's always there. But as shadow if I get unlucky with the RNG Gods, my core damage will noticeably drop through no fault of my own.

And our Mastery can be dispelled in pvp as well, which is unfortunate.

Yeah SPriest mastery is... interesting. I kind of like it, but it's very odd that SPriest is the only (correct me if I'm wrong) kind of mastery like this. I wouldn't mind if there were more masteries like this, especially for classes that have crappy masteries already (read: resto druid, though I'm sure there's others...). It would be cool if, as a resto druid, my heals caused me to gain stacks of a buff that I could expend for, say, a guaranteed critical heal or something like that.

Elemental Shamans also have this time of effect for their mastery, which is a change for a second spell to be cast that does 75% damage of the original. So RNG can screw us over too.

I absolutely despise our mastery. The RNG is completely terrible, and we can actually go several DoT cycles without actually seeing an orb at all, crippling our dps. Our dps fluctuates greatly because of this, and it just adds needless complication. Add that to the fact that we already have to stack Evangelism before casting our DoTs, and we have the longest potential rampup time in the game.

I would much rather just get a passive DoT bonus.