Moander is nefarious deity who seeks to corrupt all. As the deity of rot, corruption, and decay, he is the perfect representation of entropy who would devour everything.
Some lost folks, or maybe those who enjoy watching life be devoured into rot, will find their way to Moander's teachings. His influence, much like his domains, is a slow but devastating corruption. "Minions" as he calls his followers, often are not of right mind. Mentally rotted by his guidance causes them to enjoy the spread of his decay.
Some are much more capable at abiding by Moander's goals. Those who are, tend to receive gifts to assist in these endeavors. Weapons that poison the wounded, wands meant to inflict ailments. The greatest prize of them all, a corrupted moonblade. The prize of elven society, corrupted to be used for evil.
- from the publisher's blurb