Stronghoof was hit by strange magic item, he is horrified not only his hooves and eyes glow, but his teeth is now sharp similar to predators, that banished from Foenum in ancient times. He is despair when learn that one’s his ancestors is sianach the carnvorous deer, how he face his fellow deerfolk? That their beloved Jarl become monster! They will afraid him! It more worse that now he crave eat meat. All his fear and anger that manifested into dark self that meet his dreams/visions. His dark self persuade give up and change into him. Stronghoof almost change into dark self ( similar with Luna into Nightmare Moon ), but in last resort Stronghoof froze self to prevent make evil deeds.
Stronghoof: Who are you?
Dark/evil Stronghoof: I’m you, but better, powerfull and hadsome.