If you desecrate your deity's altar you stop following that god and have your faith and favor reset to 0. Excorcism xp is gained. The altar is removed from the game.
Before desecrating, it should be noted that mayors are able to equip a maul and right click an altar to select the destroy option. Do not desecrate your deity's altar unless you are certain you want to deal with the faith and favor resets. There are no known penalties for destroying an altar on deed if you are the mayor.
== Types of altars ==