*gives it proper thought*
... Ouch, you're indeed right. Thanks for pointing that out!
Sorry about that, I think I unconsciously stuck with the Miracle idea because it seems to me that the creature is invulnerable to almost anything except if it's divine/holy in some way. Either way, nevermind that then, OP (and the lich's cohort 'direct destruction miracles' too). I'm still pretty curious about the Mirror of Opposition, though!