Barricade
11th-level Keeper feature
As an action, you conjure a solid ki barricade of force in an unoccupied space you can see within 60 feet. The barricade lasts a minute until you dismiss it as a bonus action
Size: One contiguous 5-foot cube. At 13th level and again at 17th level, the barricade increases by one additional contiguous 5-foot cube.
Limit: You can have a number of barricades active at one time equal to your proficiency modifier
Selective Passage: You choose which creatures and spells can pass through the barricade.
Restraining Order. A hostile creature that comes within 10 feet of a barricade must succeed on a Wisdom saving throw against your monk save DC or take damage equal to your unarmed strike die + your Wisdom modifier (choose the damage type) and become restrained until it succeeds on the saving throw at the end of its turn.
Mobile Defense. On your turn, you can move each barricade up to your movement speed.
Self-punish
15th level Keeper feature
Starting at 15th level when a creature fails vs forced redirection you can use a reaction to make the creature that failed take your unarmed strike die. Choose the damage type: force, thunder, acid, cold, fire, lightning, poison, or psychic. This damage can occur only once per round per creature.
Administrator
18th-level Keeper feature
Zone of Compliance. A hostile creature that comes within 10 feet of you must succeed on a Wisdom saving throw against your monk save DC or suffer the ordered advance, forced redirection, and revealed presence effects until the start of your next turn