How do I use the Mega Evolution card #188 (The golden Mega Lucario EX card) in my standard decks?

eragonconkered

So I just got the card Mega Lucario EX from a mega card crate, it is the golden one numbered 188 in the game. I can't seem to pull it up in the deck builder so that I can use it in my decks. I have also noticed that other cards don't show up for me when I use the deck builder. How do I fix this?

Hades0918

I don't know what Deck Builder is, but go to Mega Lucario (or whatever card you're trying to use), press the spot that shows how many of the cards you have, and go right until you find it.