Eruraviel
The elven girl chucked at Sage's roar, finding it cute rather than scary. "Yes yes, give me a minute."
She shrugged off her dress, lithely slipping out of the restraining fabric and allowing the magical artifact to fall into a heap on the floor. She slipped out of her shoes and removed her stockings as well, baring her naked form to both the dragon and her girlfriend. An entirely flaccid cock hung between her legs, swaying as she hopped back and forth, stretching.
Then, her eyes suddenly flashed red, and tainted power began to emenate from her. "Releasing restraints on power; loosening restrictions."
Her skin began to melt off as her body seemed to expand. She grew larger, and, within a second, her body had burst, out of which a great purple beast emerged, dripping viscous beads of acid onto the floor, sizzling against the magical wards. Two horns burst out of her head, a tail soon following with an oozing, pointed stinger. Finally, great purple arms burst out of her back, and the demon smirked at sage with sadistic pleasure.
"Defeat me if you can, Sage!" She roared out, crimsom eyes watching Sage's soul, putting her on edge as she felt the elf's power prying into her everything.