Blurring the line between black and white, Selyn DeJaod is one of the last surviving Blaze Knights of old.
Darken Flind is capable of harnessing the raw power generate from sacrifice and forge the struggling soul-essence into magical runes and charms. Bloodforging, as the practice is known, tends to be less subtle and benevolent than other forms of magic. However, a bloodbound object can be incredibly potent and deadly in the wrong hands.
Animals have parasites and diseases, so do plants, there are even bacteria that cann dissolve oil spills or plastic or what have you - why couldn't there be a disease living off magic - a magic item could be infected, losing power and speading the plague to other equipment it contacts, while a magic user would slowly lose his powers and contaminate all he works with or casts a spell at...