C357 Armored Tyrannosaurus Rex
Digimon's evolution wasn't usually a single evolution, but no matter how you put it, if you wanted the Digimon to evolve, you had to create a bond with it. If you didn't have this layer of restriction, no matter what you did, the Digimon wouldn't be able to evolve.
"Woman, quickly insert that digital soul in your hand into the digital tyrannosaurus machine!" The Agumon Beast said excitedly