Quote Originally Posted by sanahtlig View Post
-- So really, what people use Mordred for is Affliction resistance down and Black Propaganda. That is a potent combination, --
This.

If debuff resist down doesn't get... resisted, then Black Propaganda always goes through. And considering how vital debuffs are in this game, having less chance of getting them resisted is very good.

Also, he does have -10%/-10% debuff, which is much better than 0%.

Overall, Mordred packs three tools in one. Although one of those tools is very weak (-10% B is relatively easily replaced), the other options are Cass and Joan who bring two tools to the table.