Converted to 3rd Edition from the 1st Edition Monster Manual II TSR 2016
Robert J Schwalb
robert84@mindspring.com

			Vapor Rat
Tiny Magical Beast
Hit Dice: 2d10 (10 hp)
Initiative: +3 (Dex)
Speed: 30 feet, Climb 15 feet, and Gaseous form 10 feet.
AC: 15 (Dex +3, Size +2) 
Attacks: Bite+2
Damage: Bite 1d3-2
Face/Reach: 2 ½ ft. by 2 ½ ft./ 0 ft.
Special Attacks: Stinking Cloud
Special Qualities: Gaseous Form, Darkvision 60 feet, and low-light vision
Saves: Fort+3, Ref+6, Will+0
Abilities: Str 7, Dex 17, Con 10, Int 2, 
Wis 10, Cha 8
Skills: Hide+11, Listen+2, Move Silently+5, Spot+2
Feats: Alertness
					
Climate/Terrain: Any land
Organization: Solitary, Pair, Pack (1d10+2)
Challenge Rating: 1
Treasure: ½ Standard
Alignment: Always Chaotic Neutral
Advancement: 3-4 HD (Tiny), 5-6 HD (Small)
“Vapor rats appear to be nothing more than large, giant rats. Their habitat, however, includes areas not common” to their brethren, “for these creatures also dwell in and on the substantial cloud islands which frequently serve as the abode of cloud giants.”
Gaseous Form (Sp): “It is possible for vapor rats to alter the substance of their bodies and assume a gaseous form. In this condition they appear to be wisps of cloud or similar vapors.” In all respects, the vapor rat’s ability to transform is exactly the same as the spell of the same name, and it may do so as a free action at will.
Stinking Cloud (Sp): Whenever a Vapor Rat is killed; it releases a stinking cloud (q.v.) that affects only one individual with an area of effect of a 5 foot by 5 foot cube. DC to save against this spell-like ability is 14.