Well, she doesnt proc XQ and Yelan ulti... so you have to use something like Nilou or Kokomi.
Skip to 7:10 in the link here: https://youtu.be/I_SK0-Q7Nic
Her autos during ulti are dealing 6.5k crits with the occasional 16-18k vape crit and then her last and most powerful hit does 26k crit vape.....
Regardless of what the characters main function is, for an ulti that forces the character to be on the field for 6 seconds and has no additional benefits to the rest of the team other than "deal damage for 6 seconds" this is insanely sad.
EDIT: Just to make myself clear in case anyone mistakes my intentions. I m not here to advocate for meta or to judge people for rolling on a character they like. Most of the 5 stars I own are off meta characters like Cyno, Scara, Itto etc simply because I liked them.
I do however want to point out the reality of the situation becuase Dehya being exceptionally bad is just a fact and I find it a bit insulting from MHY side to do something like this simply to frustrate you when you lose 50/50 so you can swipe your card on other limited characters.