>>42713699If I'm reading this right, "last 6 years" means a cutoff in early 2014. That means Kalosmons are fine, as they came out in late 2013, but ORAS Megas, Primals, and forme changes are verboten.
That's an interesting place for a cutoff, OP. Is there any particular reason why you decided to make a dividing line in the middle of Gen VI?
My favorite, Tyranitar, debuted over 20 years ago in case that matters, though I am quite fond of Barbaracle.