Deary VS Samael

[Crowsfoot]

I heard Deary is so OP that it can level upto 100

Yes, here is his level 100 form

Attachment 95756

He has 2 AAs. The first expands that bubble making the party immortal for 10 seconds and the other shoots one of the two energy blasts that banishes all mobs in range. The later can be used only twice a run, but is enough if you do large enough pulls.