Blood Curdle

The caster can use the blood of a target to inflict the spells affects. The caster manipulated the blood and transforms it into a puffy white liquid, the foam then immediately seeks after the creature who’s blood it is made of within sixty feet of the caster. Once it finds the target, the target must make a dc 14 constitution saving throw, or take 1d20+4 necrotic and gain the inability to move for 2-6 minutes (depending on blood type -A-2 B-4 O-6)