Talk:Lost World (card)/@comment-17865830-20180815141307/@comment-25521923-20180815142447

You'll probably find that when they say "can't be mixed" they just mean that the Lost World extra deck cards can't go into the main deck, but you can put cards from dropzone into the Lost World deck.

The decks cannot be mixed prior to a game starting.

I'm only basing this off the fact that when you go into Lost World, you can still interact with previous world cards.