If a campaign lets you add a regular player card that does not count towards your deck limit, you can do so by opening the card popup
and manually adjust how many of that card ignore your deck limit.
Ultimatum of Chaos
You can create random decks with the chaos button found in the deck builder.
Card Ownership
You can set which packs you own in the collection manager (see My Collection in the user menu). When looking at decks, any
cards in packs you do not own will be highlighted with a