The fantasy setting I GM in has a god of taxes, so whenever the party accumulates more than a few thousand gold and aren't spending it, I start sending paladins

The fantasy setting I GM in has a god of taxes, so whenever the party accumulates more than a few thousand gold and aren't spending it, I start sending paladins of the tax god after them at random. Got to a point where the party stumbled across a dragon lair and instead of fighting or bypassing it, the party wanted to go in and ask it for financial management advice. "They have hoards and there aren't any tax collectors here, so dragons must have figured it out!" So I made the dragon be a tax collector. Very motivated fight (they lost).