SRD:Primal Fire Elemental

=PRIMAL FIRE ELEMENTAL=

A primal fire elemental cannot enter water or any other nonflammable liquid. Unlike lesser fire elementals, a primal fire elemental may attempt to evaporate a lesser body of water if blocked. Fire elementals speak Ignan.

Combat
Burn (Ex): Those hit by a primal fire elemental’s slam attack must succeed at a Reflex save (DC 51) or catch fire. The flame burns for 1d4 rounds. A burning creature can take a move-equivalent action to put out the flame. Creatures hitting a fire elemental with natural weapons or unarmed attacks take fire damage as though hit by the elemental’s attack, and also catch fire unless they succeed at a Reflex save. The DC is Constitution-based.

Elemental Traits: Immune to poison, sleep, paralysis, and stunning. Not subject to critical hits.