All common commands relating to KingdomsX plugin can be found below:
/k help
Opens the interactive kingdoms help pages for the players. Only the commands that players have permission to are displayed in this list.
/k create
Create a new kingdom with the specified name.
/k disband
Disbands your kingdom and all the lands and members will be lost. Only the kingdom king can do this.
/k rename
Rename your kingdom.
/k claim
Claims the current land that the player is standing on.
/k unclaim
Unclaims all lands that don't have a turret or structure in them.
/k sethome
Sets your kingdom home at your location.
/k home
Teleport to your kingdom's home. Moving or getting damaged during the teleportation, will cancel it. Once you make a new kingdom, the plugin will automatically set your home at where you're standing if the land was automatically claimed successfully.
/k unsethome
Removes your kingdom home.
/k nexus
Changes your kingdom nexus location.
/k bank
Put or take money from your kingdom. Kingdom banks are used for taxes.
/k ally/truce/enemy
Send a request to a kingdom to change your relationship status with them.
/k revoke
Revoke your relationship with a kingdom.
/k promote
Promote a player in your kingdom to a lower priority rank.
/k demote
Demote a player in your kingdom to a higher priority rank.
/k top
View the top ranking kingdoms with the highest mights.
/k fly
Toggle kingdoms flight. Only players with over 20 days of playtime (do /playtime to view) or have donated for early can do this.
/k invade
Invade another kingdom's land. Only works on nexus chunk.