Blood Poisoning. When a creature is exposed to the crimson bones' blood, such as through a melee attack or as a result of the blood splash feature, the creature must make a DC 13 Constitution saving throw. On a failure, the creature contracts the disease blood poisoning & takes 2 (1d4) poison damage at the end of each of its turns. The effect lasts until the creature dies or is cured through casting the spell Lesser Restoration, a paladin's lay on hand feature, or a similiar magical effect.

Blood Splash. When the crimson bones takes damage of any type but psychic, each creature within 5' of the crimson bones must succeed on a Dexterity saving throw with a DC of 5 + the damage taken or be splashed with its blood.