Ishara's Fiery Transfiguration (3.5e Spell)

Calling upon the fires that burn all over the planes, you transform your body into living fire. Your equipment transforms with you.

You gain immunity to poison, sleep, paralysis, stunning, critical hits and flanking. You also gain darkvision to 60ft and the [Fire] subtype. Anyone striking you with natural weapons, or struck by a melee attack you, must make a Reflex save or catch on fire. You are also not subject to any high environmental temperatures, heat exhaustion, dehydration or similar effects.