Huh, you know, that's not a bad idea. The Porygon line's always interested me, but I've only ever seen trainers use their first form and Porygon 2. I'll definitely have to keep that in mind.
[Varied move pools are good. Special attack is also good. Yes...]
As for Deino, they're a solid dragon type all around. They start out blind, but if you can work past that, you'll end up with a powerhouse by the time they reach their final stage. Hydreigon's with both physical and special attacks, it's pretty fast, and its defenses are solid enough. Its ability leaves it immune to moves like Earthquake, and it's got a move pool that covers practically all of its weaknesses.
[AUDIO]
[Varied move pools are good. Special attack is also good. Yes...]
As for Deino, they're a solid dragon type all around. They start out blind, but if you can work past that, you'll end up with a powerhouse by the time they reach their final stage. Hydreigon's with both physical and special attacks, it's pretty fast, and its defenses are solid enough. Its ability leaves it immune to moves like Earthquake, and it's got a move pool that covers practically all of its weaknesses.