Dragonite has never had a Mega Evolution in the main games until now (thanks to an upcoming video game) and the TCG wasted no time in capitalizing on the hype
However, only a few pendulum-based decks have been in the meta throughout the game's history, leading to many of these complaints being completely unwarranted
It's the same 200-odd cards that everyone else can access and, more importantly, only one or two of the rare ones are required for you to build a highly competitive deck around - after less than a week of checking in daily, I had enough for at least one, and probably with a bit of targeted play two or three, of the main competitive decks already
So, with 210 health, a psychic Pokmon can deal 10 points of damage, but also +30 points for each Energy card attached to two active Pokmon
Special Summon that monster in Defense Position