Dark Regulus

Dark Regulus is an anime-only Caster Magic.

Description
Dubbed as the "dirty light" by Natsu Dragneel, Dark Regulus, much like its light-based counterpart Regulus, is a Magic that allows its users to empower their melee attacks with the usage of dark flame-like energy, to the point that it can overpower a user of a Dragon Slayer Magic. However, it can also be used for ranged combat, with the user shooting the dark flames from their palm to attack from afar. Moreover, Dark Regulus has shown a capability to absorb "light", such as Natsu's flames, in order to nullify the opponent's attacks while using the absorbed Magic for themselves.

Trivia

 * Regulus (α Leo, α Leonis, Alpha Leonis) is the brightest star in the constellation Leo and one of the brightest stars in the night sky.