I love Diadem. Yes, I consider myself one of the Diadem Fans who are a very small minority. While it is extremely grindy, I actually did like that aspect to it; but more importantly, I liked the the experience of spawning and downing Star ranks.

There is one extremely popular creature however, that did not receive any sort of notorious monster status, and that is the Paissa. To remedy this, I propose that a Paissa be added to Diadem, preferably in the form of a Star Rank.

What would the Paissa be capable of? Truthfully I haven't thought that part out. I more just wanted the idea of a Paissa Star Rank to be suggested. There are a few notable things in lore that I can think of, which could transition into unique abilities. The Souleater affix was thought of by MarkoTurn. I would have gone with Paissa Overlord, but again, that goes into more specific things when I just want the idea out there.

-I'm pretty sure there's a FATE in Sea of Clouds that eludes to the Paissas being notorious thieves. This could allow the Paissa Star Rank to be a thief of some sort.

-The Paissa Brat's minion description mentions that they're bred for fighting by the Vanu Vanu. Vague, but it could give a reason for the Paissa Souleater to have Vanu Vanu-type abilities.

-Chirp is an attack actually used by Squonk, it is also used to summon the S rank. Perhaps the Paissa Souleater could summon Void Paissas.

Most importantly though, the Paissa Souleater should haunt your dreams.