XY introduced a few new rules changes to the TCG, particularly that the active Pokmon of the first player cannot attack on the first turn, mitigating some of the advantage of winning the coin toss and going first
Since Ayula loads up on +1/+1 counters, you can power her up past what your opponents can handle, all while slapping on a few Mirran swords and hexproof auras to make sure your opponents cant interact with her at all
Piplup is classified as a Promo card in the PROMO-A set
Your Leader determines the type of cards you can play the same way a legendary creature determines your color identity in MTGs Commander format
In 2010, it's instead shown from bird's-eye view, which is disappointing for a few reasons
Im still trying to find that Japan Confectionary Database website I once stumbled upon which showed the flavours and release dates starting in March 1997, but until then I think what Ive said above should be a strong argument against 1995