When I check my career-mode inventory, I have 1 each of Neo Genesis Sneasel and Neo Revelation Sneasel. As soon as I go to build a Rocket-LC deck, the Neo Genesis Sneasel disappears from the list. I thought maybe it was banned, but Neo Genesis Slowking shows up, so It can’t be the classic banlist. I also can’t find any sort of banlist on the site for any format so I assume there isn’t one.
Rocket–Legendary Collection is based on the Rocket-on Modified format of 2002, where Neo Genesis Sneasel was banned. For more info on the format, check out this article I wrote a few years ago: https://jklaczpokemon.wordpress.com/rocket-on/
If it can’t be used, why can we get it in the packs? That feels like a punishment…unless there’s a chance it comes into the format. If not…it just seems cruel to have it as a card you can get in the packs. I was super excited to use it as it’s one of my favorite cards ever printed (I’m also a giant fan of the Sneasel Weavile family in general). Also, if there are banned cards in the formats…why not have a banned list somewhere? Even just a stickied forum thread would be good.