Unlocked with Blacksmith, players can store their XP in XP Bottles for storage or trading!
You can calculate how much total XP you have using /bottle stats.
You can also calculate how much more XP you need to reach a certain level with /bottle until <level>.
To bottle your XP for storage and sharing, run /bottle get <xp amount>.
You can also bottle XP based on level amount /bottle store <#L>.
You can send XP as a gift to other players using /bottle give <player> <amount>.