[Event] Sealed Book of Combat (20 Days)

- Description: Right-click to unseal, and get the [Event] Book of Combat (20 Days). Right-click on the Book of Combat (20 Days) to get Combat EXP +50% and Skill EXP +20% for 24 hours. (If the Book of Combat is already in use, you can unseal a new Sealed Book of Combat after it expires.)

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