Soothing Mud

You create an area of healing mud. Water, earth, sand, and dust thicken into a wet mud. The mud functions as difficult terrain and does not sink if created in water unless weighed down by more than (CASTERLEVEL*100) pounds. Each round a creature begins its turn in or on the mud, the mud restores 1 hit point to it; this healing is unaffected by effects that increase a creature's healing. A creature that rests partially or completely submerged in this mud for 1 full minute is also healed of 1d4 points of ability damage to an ability score of its choice. A creature can be healed of ability damage this way only once per day.