The Keeper Mouse from the Catacombs.
I was successful in my hunt! I caught a 5 oz. Keeper mouse from the Catacombs worth 3,946 points and 3,905 gold. If you hit him just right, he may drop the Keeper's Candle without it breaking to pieces. You'd need this to guide your way to the Forbidden Grove and the Acolyte Realms..