uncommon n small animal 

Perception +10; low-light vision

Skills Acrobatics +8, Athletics +7, Stealth +9, Survival +8

Str +2 Dex +5 Con +1 Int -4 Wis +4 Cha +1

AC  18; Fort +5, Ref +11, Will +8

HP 34; Weaknesses electricity 2; Resistances fire 4

Volatile Gasses Whenever a desa-desa takes electricity damage, it must attempt a

DC 18 Fortitude save. On a failure, the sparks cause the desa-desa to immediately use Fire Blast if it can, and the desa-desa becomes flat-footed for 1 round.

Speed 40 feet, climb 20 feet

Melee [>] bite +11, Damage 1d4+2 piercing plus bubble venom

Bubble Venom (arcane, poison) A creature bit by a desa-desa breaks out in large, painful blisters which expand and pop as water in the victim's body turns into volatile gasses. Magical healing of any kind counteracts the bubble venom;

Saving Throw DC 18 Fortitude; Maximum Duration 6 rounds; Stage 1 weakness to fire 2 and 1d6 piercing (1 round); Stage 2 weakness to fire 4 and 2d6 piercing (1 round)

Fire Blast [>>] (arcane, evocation, fire) The desa-desa releases a burst of explosive gasses in all directions, dealing 3d6 fire damage to all creatures in a 5-foot emanation. The desa-desa can't use Fire Blast again for 1d4 rounds.

Gatewalkers #1: The Seventh Arch, page 85.