We report the discovery of two new companions to a warm Jupiter first discovered by TESS. TOI-201 c is a super-Earth orbiting a young active F star on a 5.85 d orbit interior to the warm Jupiter TOI-201 b. We also identify a long-period brown dwarf, TOI-201 d, exterior to TOI-201 b thanks to a single transit event in TESS sector 64. We confirm the 8-year orbital period of this eccentric brown dwarf using RVs from CORALIE and HARPS and find it is by far the longest-period transiting brown dwarf ever discovered. Combined with Hipparcos and Gaia astrometry, we are able to characterize the full 3-dimensional orbit of the brown dwarf. The brown dwarf is also responsible for the transit timing variations seen for the warm Jupiter. The system is a rare case of one with substellar companions spanning a wide range of masses and adds to the growing list of warm Jupiters with nearby companions as well as warm Jupiters with very distant companions. Furthermore, this dynamically active system is ideal for follow-up observations to further characterize their orbits and compositions, which should give insight into the formation and evolutionary history of these types of planetary systems.