Baltron's Effusive Bloodboil

Choose a humanoid creature within range. At the start of the target's next turn, it burns with fever and sweats uncontrollably, taking 2d4 fire damage. At the start of it's following turn, blood starts dripping from it's eyes, ears and nose, and it takes another 2d8 fire damage. At the start of it's subsequent turn, it takes another 2d4 fire damage as the spell's effects dissipate.

Each time the target would take damage from this spell, it makes a Constitution saving throw, taking only half damage on a success.

When you cast this spell using a spell slot at 3rd level or higher, the damage at the start of each of the target's turns increases by 1d4, 1d8 and 1d4 respectively, for each slot above 2nd.