Eldritch Drain

When casting this spell the amount of damage dealt is XD4 necromancy damage where X stands for the amount of health sacrificed. when a component is used the damage goes from d4s to d6s any willing creature touching the caster can contribute health in addition to the caster. a single willing creature can sacrifice health instead of the caster when within 15ft of the said caster. An unwilling creature's health can be drained when within 15 ft of the caster and a maximum of 20 health can be drained. if a creature's health is drained to zero then the creature dies instantly, they do not roll death saves, they are dead. When just one source or the participants are touching the caster it takes two rounds of concentration to cast the spell. only if the caster needs to concentrate, so even if the source is hit the spell continues, unless the caster is the source. only the caster needs to concentrate the spell can be cast at anyone or two targets within sight, if cast at two targets then the damage is split evenly between both, rounded down. it is a guaranteed hit with a dc10 dex save to halve the damage, rounded down. this spell ignores resistances. immunities, and weaknesses.