When you are in the campaign deckbuilder you'll see a grid like this:
Unlike pvp where you can simply put up to 4 copies of any card in your deck the PVE campaign restricts what shards you can use as well as how many copies of each rarity you can put in the deck.
In the above example you have all shards available (at lower levels you won't have all shards available) but you are limited by the number of copies of the different rarities.
For example you can only have 1 copy of each common blood card, or 3 copies of every sapphire uncommon, 2 copies of any diamond rare, etc.
That's why in the campaign deckbuilder you will see you only have 1 or 2 copies of a card available even if you have 30 copies in your actual collection.
You could put as many blood commons in your deck as you wanted but you could only use 1 copy of each card (instead of 4). The grid changes depending on what race you select and becomes more flexible as you level up. When we can eventually hit the level cap (level 30) it will be unrestricted and be the exact same as pvp deckbuilding.
EDIT: Here is another example:
- This character can't use blood or wild cards.
- Can use any diamond card but only 1 copy of each
- 3 copies of any ruby common and 2 copies of any ruby uncommon, rare, or legendary
- Sapphire and Artifacts cards have the same restriction as ruby
Last edited by Daer; 01-27-2016 at 01:41 PM.