[Event] Mystical Brilliant Egg

- Description: A mystical shining brilliant egg. Right-click to obtain one of the following according to a set probability: Fine Accessory Box III, Cron Stone x100, Memory Fragment x30, Sharp Black Crystal Shard x15, Sharp Black Crystal Shard x30, Advice of Valks (+40), Cron Stone x10, Memory Fragment x5, Sharp Black Crystal Shard x3-10, Black Gem Fragment x15-20

- Additional use requirements are not yet decoded; this is not a complete eligibility check.