Knights of Tezoth

The build might be OP, but it'll be a bit boring to play like that. Not in terms of handing out beatdowns, but in terms of RP. At least for me personally.

I wouldn't say it's straight-up OP. You could make even scarier things. And as for boring/interesting, I'm not suggesting anyone actually play this. I've made many OP builds — take the soul eater Siva, for example — but I don't play most of them. Either because the weapon isn't interesting, or because of the origin/conviction.

As practice from the last two Revan exps has shown, OP is invisibility in combat. And that goes both ways. For the player and for NPCs. Over time, a trend has started here for invis-users and characters with instant retreat from the battlefield.

Invis-users have always been useful. There's nothing new in what you described.