I'm sure that I have at least 2 each of the Gardevoir GX and M Gardevoir, although they may be from the Radiant Collection part of Generations. Would those be of interest?
I saw ads in the Beano about the TV series, it was show on terrestrial TV in Ireland, so I was primed but knew that it was based on an awesome computer game. So one summer my brother and I got gameboy colours and pokemon (red for me, blue for him) and the rest is history.
I' m a trainee science teacher, I have a Victini pin on my ID badge, and I put odd examples of pokemon in my lessons. We were doing the rock cycle and I had an onyx as a clue.
In pokemon TCG pretty much everything has a weakness, this avoids the 'one deck to rule them all' problem that sometimes occurs in other TCGs. Sure $£ is a factor, again not as bad as some other TCGs (although shaymins should have been in the keldeo/rayquaza box!)
Luck ... you need to make your...
I've been trying a similar list since AlakazamEX/M-AlakazamEX is quite a fast pokemon. But I struggle a little sometimes to get enough 'pre-damage' onto enemies to ensure the knockout.