Okay, y'know what, I'm gonna go daggers out on this one for a particular reason
MCDM's Illriger.
It isn't bad because its not well made (its very well made), it isn't bad because it doesn't work (It very much works), it isn't bad because of its concept (Its fine).
No, its bad because they really should be able to balance better. Yeah, I get they wanted more 4E style, but, you gotta balance stuff within a party and having an entire class that just goes "Hey I'm Twilight Cleric levels of standing out" isn't a good look. Its bad because it disappointed me because I know I'm not going to be able to play it because I'm not just going to pick "Yeah this is the super powerful option to outdo the party"
I dunno, maybe they nerfed it since last I looked, but I remember it doing way too much for a 5E chassis