Self-appointed Godking of Corruption, Banadar is known to be the first practitioner of corruption magic, back before he was a deity, and the most powerful practitioner. His skill with corruption magic is powerful enough to create the planet Corta Diez out of it, and the associated sun Corta Diez orbits was originally normal, but corrupted by Banadar in order to sustain Corta Diez.
Devotion: Worshipers of Banadar must do one of the following in order to increase Devotion with him; use corruption magic, kill a worshiper of another deity, or corrupt someone metaphorically or literally.