The `game_event_creature` table
Contains all creature instances that have to be spawned/unspawned during defined game events.
Entry of the game event. Put negative entry to remove during event.
Description of the fields
Entry of the event (game_event.entry)
Use+*entry to have the creature added during the event
Use-*entry to have it removed during the event
Guid of the creature participating in the event (creature.guid)