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I won't go too deep into these topics right now, but these are the biggest things to look out for if you want to get into buying Pokemon cards

You wont have a handful of transformed werewolves and a handful of non-transformed humans on your field anymore and keeping track of what does and doesnt transform is way easier

The Beginning Set was rereleased on August 5, 2011, which contained the same cards as the September 2010 Beginning Set, but came with this game

Since Mais ability causes life loss and not damage, this even works through The One Rings protection in older formats, so opponents cant use that to get around it

Or what about Horror Energy which provides Psychic Energy but also damages an attacking Pokemon too

Worst case scenario you land this on a 1/1 and it takes a couple turns to get going