Glancing at the Imp, I was able to understand the purpose of the blackish aura around my weapons. It was the skill it had called, Dark Mantle.
Name: Imp
Race: Lesser Demon
Health Points (HP): 28/28
Mana Points (MP): 17/17
Demonic Energy (DE): 5/5
Strength: 10
Vitality: 14
Intelligence: 34
Dexterity: 19
Agility: 21
Luck: 1
Skill: Dark Mantle, Shadow Sting, Lesser Demonic Energy (Passive)
Dark Mantle (Active) 5MP or 1DE - Apply dark element to a weapon, shield, part of the body, or an object. Enemies making contact with the dark element will take damage (10 + 100% Intelligence). Can apply Dark Mantle 3/5 more times. Duration 5 mins. Cooldown 10 mins.
Shadow Sting (Active) 5MP or 1DE - Release a thin dark needle to deal damage to a target. (20 + 50% Intelligence). Cooldown 30 seconds.
"Imp, apply Dark Mantle on Devel and Fierna for me!" - Kingston