Saddling a Mount or crewing a Vehicle doesn't cause this creature's power to change
Even though these combos haven't yet proven to be successful in tournament play, they will become easier to achieve with the release of new cards, so Unown is being banned as a preventive measure
Sure, we are giving them a world of potential answers in the process, but we are taking advantage from it as well and forcing them to pitch their hands frequently forces them out of any long term plans they might be holding on to
The use of dinosaur armor, including a version of powered assault armor, also helps extract these dinosaurs from our past and places them not in a Lost World, but a parallel world, somewhat like Dougal Dixons The New Dinosaurs
This happens every upkeep, meaning the battlefield will look like the mall parking lot from Dawn of the Dead in no time