It was pretty interesting de-evolving Eaglemon into Chirinmon, then into Reppamon, only to evolve it into DoruGreymon then, finally, Dorugoramon.
Wild.

>>724014512
>Crossmon -> Dorugoramon/Tyilinmon -> Reppamon -> DoruGreymon -> Dorugoramon.
Success.
Took some time to beat some card gamers in the Dark Area that I hadn't fought before.