/technique

Command	Effect
/technique repair [dry-run] (= /mxt technique repair [dry-run])	Removes the stale entries that point at technique definitions the current data pack no longer provides; dry-run reports what would be removed and changes nothing.
/technique drop <id> (= /mxt technique drop <id>)	Removes one learned technique and rebuilds the attributes and abilities it granted.
/technique diagnose (= /mxt technique diagnose)	Checks the technique item in your hand gate by gate and reports why it cannot be used.