Teacher for Azz ya say?
Enyalius is a cruel f*er, his eyes are wild and his smile is devilish at the least. An extreme sadist/masochist he takes great thrills in destroying another mind, body, and soul. He tortures others to death, extremely slowly so they feel ever ounce of pain he can rip from their bodies. He is always looking for and creating new ways to torture others
Of course Azzan would either have to survive one of his tortures or rival in him in a fight before expressing his desires to learn from Enyalius, for his is quiet picky, and really Enya would just be trying to warp the stallion even more than he already is.
And on another note, Azzan should probably leave Revah out. Enyalius doesn't think highly as mares. Unless kalona or family he sees them as nothing more than vessels which should be used for one's own pleasure and creating foals nothing more.