As I type, I seem to be stuck in an infinite loop with Enfys Nest against Treya in phase 4.
Treya is at 50 stacks and is attacking over and over and over and over and Nest just keeps flashing up the word Immunity each time and just standing there, waiting for her turn. But she never gets one because Treya keep attacking and removing turn meter. But Treya's attacks aren't damaging Nest so Treya can't win but Nest can't take a turn!
Nest is isolated, can't heal, can't gain buffs. She's on minimal health but full purple protection.
This is ... weird.