Kairon growled a bit and dismissed his illusion all together and stopped concealing his aura from them.  But he was already pumped up with a few buff spells including Cat's Grace to amp his Dexterity, Reverse Arrows to avoid ranged attacks and Shield to add a bit more defense.  He decided it was time to take the fight to them instead and dropped from his hiding place and strode out of the cavern like a feline predator.  He'd produce his mighty composite longbow of fiery blast and drew it back aiming at the group of good guys. "Die." he growled, his devil lord aura becoming oppressive quickly within the tight corridors.  He'd let fly with a powerfully flaming arrow that was equal to shooting a full powered fireball into their midst, aiming to hurt them and force them apart.