When and where it spawns : There is the chance that Elite bosses will spawn in the place of Clearing Monster. Their show-up time is random. They can re-spawn after killed. Places of Clearing Monsters can be found in Reputation Task such as Thundercall Academy, Cudina, Whiterose Village, Yearnstar City, and Lunarian quest. How many of them spawn per day : No exact answer as it is random. Reward :Reward is offered only once a day for killing the same Elite Boss. You can only get reward twice a day from killing the Elite Boss and finishing Field Event.