Ray Silver said:The Musteval are Tiny celestials (guardinals) that are based off of ferrets. "They often serve as spies, and aid humanoid heros by giving them information about powerful evil foes." They have a lot of at-will spell like abilities, including some disguise spells they use to conceal their unusual appearance.
The poisons, called ravages, only work against evil creatures and work the exact same way other poisons do, by dealing ability damage. Some of them are quite deadly. The ravages are as follows: Golden ice, celestial lightsblood, jade water, purified couatl venom, and unicorn blood.