Alzrius
The EN World kitten
The one who'd be more likely to do that is the demon lord Graz'zt, since he previously imprisoned Waukeen and tried to steal her portfolio (not for himself, since he doesn't want to be saddled with the responsibilities of godhood, but for one of his children), until she was eventually rescued in For Duty & Deity (affiliate link).Waunkeen is literally the Goddess of Capitalism, so you could have the characters caught up in conflict between her church and Ilmater that drifts into open war in the streets because of the manipulations of an evil God like Cyric (whose church teaches a kind of darker libertarianism), who wants to steal Wealth/Capitalism from neutral power Waunkeen.
That's actually a pretty easy setup to work with even after she's restored to power, since Dragon #355 revealed that there's a heretical sect of her church which believes she's sold off most of her divinity to Graz'zt already.