Common name for giant poisonous snakes
All giant snakes are carnivorous and can be found in every type of climate except for the coldest.
Adder is the common name for giant poisonous snakes and they come in a variety of species. The poisons are usually negated by a saving throw but some types of adders have a powerful poison which, even if saved against, causes 3d6 points of damage to the victim.
OSRIC