Elder water elemental

Even more ferocious and powerful than their lesser kin, elder water elementals are among the oldest of their kind.

Special abilities
An elder water elemental has 15/+3 damage reduction and 100% immunity to fire damage as well as the standard elemental immunities to critical hits, disease, mind-affecting spells, paralysis, poison, and sneak attacks.

This creature can use its drown ability once per day.