Marsh Kaasht abilities run in the range of poison and venom. They also have the random abilities that all kaasht have, such as a dragon form, a blade ability, and abilities that only a Marsh Kaasht can have such as Cobra Spray.
| Black Miasma | 
The kaasht creates a cloud of noxious mist | 
| Breathe Freely | 
The kaasht can clear any air of poisonous or noxious gases | 
| Cobra Spray | 
The kaasht spews a blinding, acidic mist at its opponent | 
| Eternal Fang | 
The kaasht's teeth, particularly the canines, become indestructible, and the kaasht can bite anything | 
| Fatal Toxin | 
A hard-to-use ability that infects whatever the kaasht touches with a toxin that kills within moments | 
| Freewalk | 
The kaasht can freely walk through swamps without having to fight the suction of the boggy ground | 
| Immortal Talon | 
The kaasht's claws become indestructible, and can cut through anything | 
| Infectious Touch | 
The kaasht's claws become poisoned, and can infect whatever the kaasht scratches | 
| Marsh Dragon | 
The kaasht becomes a dragon that can control gases and poisons Becomes the same size as the kaasht | 
| Natural Fang | 
The kaasht's canines shrink to normal size, making it easier to talk or eat, or to appear more normal | 
| Pay No Heed | 
The kaasht can make a kaasht of a different breed completely ignore it, even if the Marsh is standing right in front of him or her | 
| Remedy Touch | 
The kaasht can heal something it poisoned. It cannot heal something that someone else poisoned | 
| Rising Mist | 
The kaasht can cause a thick fog to rise from damp ground | 
| Scorpio's Pride | 
The kaasht's tail becomes that of a scorpion, complete with toxic venom | 
| Serpent Strike | 
The kaasht can move as quickly as a striking snake | 
| Sinkhole | 
The marsh under the feet of the kaasht's opponent grows soft and sucks him or her down into it as far as the Marsh Kaasht desires | 
| Skin of the Snake | 
The kaasht's skin becomes hard and difficult to puncture | 
| Snakefang | 
The kaasht's bite becomes extremely venomous | 
| Swamp Kaasht | 
The kaasht turns to marsh-water | 
| Venom Blade | 
The kaasht gains a poisonous blade |