Fresh Ur-Dragon videos keep landing on the same expensive mana engines: Old Gnawbone, Goldspan Dragon, Ancient Copper Dragon, and the Savage Ventmaw–Aggravated Assault combat loop. Some of those cards are rising, but the package is not moving together, so this is creator attention rather than a confirmed Ur-Dragon market squeeze.
This commander was named in the trend.
Version-specific: compare the exact set, collector number, finish, treatment, and product source before trusting the move.