From TMW: rEvolt
May mutate 1 attribute up to 40%.
Shooting across the grass like racing cars, the Grass Snakes are the fastest of the snakes, and have a very poisonous bite. These monsters are found in some of the high areas of Hurnscald, and are hard to reach for the inexperienced (for good reason as they are a high level snake). To get to these snakes, one must head north from Hurnscald and enter the Northern mine.
Once in the mine, take the first left past the four Snakes that are in that narrow passage, and take the second exit south.
Grass snakes can found in Graveyard and swamp area nearby as well.