Bestiary of Fables:

reveals a ‘Creature of Renown’ within your current region upon arrival - Log in Artefact Log to receive the name of the Creature. You may use a MRP in-thread Quest to ‘Kill’ or to ‘tame’ the creature. Doing either will earn a specific reward determined by the Mod who rolls the MRP. The creature will remain in that region even if you leave and return, until it has been killed or tamed. You cannot gain a new ‘Creature of Renown’ in a region you’ve already killed/tamed one, without leaving and returning to the region.