Casket (Treasure Trails)

Caskets may be found at the end of a Treasure Trail, and they contain the reward. There are four types of them, with different difficulty to obtain and different types of rewards:
 * Casket (easy) - from easy clue scrolls
 * Casket (medium) - from medium clue scrolls
 * Casket (hard) - from hard clue scrolls
 * Casket (elite) - from elite clue scrolls
 * Puzzle casket (elite) - A special casket received from elite clues requiring the completion of a puzzle before it can be opened.