Conrad Adre Thorne, as a Diviner of The Devil Arcana Card, his Avatar granted him four distinct Abilities on top of being superhuman.
The first was his ability to regenerate. It allowed him to heal minor wounds such as cuts, punctures, or bruises almost immediately. While effective in prologued battles, it still consumed a lot of Aura from him.
It also couldn't effectively mend fatal wounds, repair damage to vital organs, or blood loss from critical injuries.
While it still did regenerate such injuries, the process was slow. It moved at a snail's pace, which often left him vulnerable during intense battles alone.
Because he lacked control over this Ability, as it activated reflexively when his body detected harm, Connie didn't bother giving it a name, As Meliora advised him that he must name your Abilities in order to remember them or something like that. The same went double when activating an Arcana Card.
But that didn't work for him.