Favorite the original: https://www.furaffinity.net/view/35331657/ or those talons are for you.

A feature all noxans have access to is a monster form. A beastly shape that complements their powers. Sanctus has sound suppression powers so a massive silently flying owl suited him just fine. Sadly, this form has been locked away from Sanctus until his damaged horns grow back. An agonizingly slow process.

Art by  ValentinaPaz HERE
Noxans by  Caedere