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.

To determine how many abilities your kaasht can have, read How Abilities Work

Automatic Marsh Kaasht Ability:
Immunity - The kaasht temporarily becomes immune to all poisons

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