Eruptive Pustules

3rd-level necromancy

Classes: cleric, warlock, wizard

Casting Time:1 action

Range:Self

Components:V, S

Duration:Concentration, up to 1 minute

Your skin erupts in swollen, pus-filled bumps that burst open if you are struck. Any creature that strikes you within 5 feet of you that deals damage also takes 1d6 points of acid damage and must make a Constitution saving throw save or be sickened until the end of their next turn taking -1d4 penalty on all ability checks, skill checks and saving throws.

If the attack against you is a critical hit the acid damage is increased to 2d6, the penalty to checks and saving throws is increased to -1d6 and the target has disadvantage on the Constitution saving throw.