Water mephit

Water mephit: Chaotic and destructive, mephits come in many shapes and have a wide range of abilities. Most are drawn from the various elemental and quasi-elemental planes.

Special abilities
A mephit has 5/+1 damage reduction and +2 regeneration.

This creature can cast Melf's acid arrow with a caster level of 3 and stinking cloud with a caster level of 6, each once per day as a spell-like ability. In addition, it can use its cone of acid once per day.