Gas

Gas is an effect featured in Dungeon Keeper and Dungeon Keeper 2, and is caused by multiple sources. These include the Poison Gas Trap and the Fart and Poison Cloud Creature Spells.
Gas works by causing constant damage-over-time for any non-immune creature caught in the noxious green cloud, including your own creatures (unless it is from a Bile Demon's Fart), so be careful!
==Creatures who can use Gas==
Dungeon Keeper
Creature	Spell	Level
 	 	
2
4
 	 	3
Dungeon Keeper 2
Creature	Spell	Level
 	 	
4
8
==Creatures who are immune or resistant to Gas==
Dungeon Keeper
Creature
Dungeon Keeper 2
Creature	Resistance
 	100
 	90
Tristan 	50