Blood Thinner

 Choose a creature to target within range. If that creature has a circulatory system causing blood to flow through it's body, it must make a Constitution saving throw. On a fail, the target's blood becomes thinned, causing them to bleed excessively upon taking slashing or piercing damage. Bleeding with this effect causes the target to take 2 D4 damage per turn until healed in any way. If hit by a vampire/dhampir's Bite attack, add an extra 2 D4 to the damage, as well as amount healed to the attacker. On a successful saving throw, the target avoids all effects of this spell.