Poison

This spell makes poison run thick in the target's veins and deals damage, but over a course of time. Upon casting, a single target within range is enveloped in a fleeting green mist. The target must succeed at a Constitution saving throw or become poisoned under the spell for their next four turns. The poisoned target takes 3d6+3 hitpoints of damage for each of the first two turns, and 3d4+3 hitpoints of damage for the last two turns. Additionally, the target loses 2 points of Constitution for 12 hours. A successful save negates both the damage and ability score effects.