Crises is a random event that occurs each day. These events are usually announced through NPCs in a city. They take place across most of the reflected worlds, and the outcome of the event is determined by the majority of the reflected worlds.
For example, one event could involve and army attacking a village. The player can enter a portal to the reflected worlds and battle the army. If he succeeds, the village is saved. However, even if that player saves that village, if that village falls on a majority of the other reflected worlds, the village will be destroyed on all reflected worlds regardless if it was saved or not.