I was recently going through all my old Pokemon cards Starting a new deck, but then I started worrying that, since all the cards aren't of the same set, are they all still usable in a deck? Also, I have an Abomasnow from the Breakthrough set and a Snowver from Forbidden Light. The Abomasnow is a water type, but the Snowver is a grass type. Can I still use those together?
Thanks for the help!