Crimson Scourge

Upon casting this spell and touching a humanoid, the target must make a Constitution saving throw. On a success, they are immune to the spell and disease's effects for 24 hours. On a failure, the victim begins to bleed profusely through the pores of the skin, taking 1d2 points of necrotic damage per turn until they are dead. Regular first aid cannot prevent this damage, nor can most magical cures such as cure wounds or a potion of healing. Casting a spell that can remove curses followed by a healing spell of at least 3rd level is the only way to negate the effect of this magic entirely.

The most horrid property of the crimson scourge, however, lies in the contagiousness of its effects, for whenever an afflicted victim comes into physical contact with someone else, the touched person will too have to make a Constitution saving throw or become afflicted, following the same rules as though they had the spell cast on them initially. Someone is only immune if they have more levels (or a higher CR) than the bleeding person; with the only exception being that you are always immune to the effects of your own crimson scourge. This plague often goes by the name of "the red death".