Such people are often referred to as 'energy vampires', feeding off others with behaviours ... there's probably a fly or hair in it most of the time too. Being a 'misery sponge' for a relentlessly ...
cursing a victim so they explode the next time they take any damage, throwing blood knives at enemies, and a chance to receive twice as much blood when feeding. Banu Haqim vampires are a relative ...