I think I understand the demon passive ability, which deals fire damage, but I'm still not entirely sure. Does it mean that whatever demons do, their "fire" passively increases their damage?
From your answer, it seemed that Lilim is good, but from Supric's answer, it seemed that she is bad.

Барон "Vampires"
Отдай свои прошлые сны,
В сомненьях себя обрети,
В бешеном танце душа кружится!
Не думай, что будет потом,
Здесь и сейчас мы живем,
Стань хоть на миг сам собой, слышишь!