blood stained rituals

you can use the corpse of a recently killed person who has died at the last minute to either heal one creature or person with a 2d6 + wisdom or intelligence modifier. or bring revive a party member. they must succeed in a final breath saving throw d20 (15) if they fail their body is dragged down to the depths of hell and the part must succeed in a CON saving throw or take 1d8 necrotic damage.