Complex sentence: In time the trainee may show sufficient control over his powers and join the Librarium Librarians are powerful psykers; able to rip apart space or slow down time, and are a force to be reckoned with.
Split into simpler sentences: In time the trainee may show sufficient control over his powers and join the Librarium Librarians. They are powerful psykers; able to rip apart space or slow down time, and are a force to be reckoned with.