Crafting
To access crafting, click on 'cards' in the top left of the screen then 'crafting'. Specific cards can be created on this screen with dust instead of by luck via packs. Dust is earned via disenchanting cards, you earn a small fraction of the original cost of the card when disenchanting it. Rarer cards cost and give more dust. Here you can craft and view most cards, except for those only available via summoning with other cards, such as Doodlebog via So Sorry, or Gaster blasters via Sans/Gaster. In order to disenchant or enchant/craft a card click on the card you wish to perform the action for and select the appropriate option from the following popup message. You can also select the blue 'disenchant auto' in the top left of the screen and then confirming the action to automatically disenchant cards that have gone over the limit for that rarity. As mentioned previously, there is a limit to the number of the same card that can be placed in the same deck, which is determined via its rarity. You can see this limit when clicking the disenchant auto button. You can also choose to disenchant or enchant shiny versions of cards, this will give and cost more dust respectively. To see shiny versions of cards (including ones you may own) tick the 'Shiny' tickbox underneath the searchbox in the top left. Please note that although Determination rarity cards aren't craftable, they can be obtained via special events, reaching LV 200, or reaching rank master in ranked.
Quests
In the top of the screen, next to cards is quests. Quests currently come in the form of daily quests and the loyalty quest which both give rewards. A daily quest resets once every 24 hrs at 6am Paris time and consists of 'get three wins' or 'get two wins with x soul type', this is to encourage people to try out the other soul types. The loyalty quest requires you to have at least 2 victoryes daily to gain loyalty points which can give an increased reward. These currently come in the form of 4 normal packs for 7 points, 1 super pack for 35 points and 1 final pack for 200 points. Keep in mind that custom match games do not count towards your quests. It's suggested to look at your daily quest for the day and try to complete it in classic mode.
Packs
Finally in the top left of the picture we have 'packs'. Here you can use the gold you obtained via quests and LVing up to buy new cards. A pack contains 4 cards and currently there are 3 types of packs;
- Normal packs, these contain 4 cards of any rarity, this includes Determination. These packs can be obtained via LVing up or reaching Iron to Diamond rank in ranked as well as by spending 7 loyalty points in the quest section.
- Super packs, these are packs which contain 1 common card, 1 rare, 1 epic and 1 legendary card. You cannot obtain Determination rarity cards in this pack. These packs can be obtained via spending 35 loyalty points in the quest tab, can also be obtained via [twitter.com/undercardsgame twitter competitions].
- Final pack, this pack can be obtained during special events, saving up 200 loyalty points and spending them in the quest tab, or MAYBE via reaching rank master in ranked. It contains 1 Determination rarity card, 1 legendary, 1 epic, and 1 rare.
Currently there is no way to trade in cards/dust for packs. Nor is there the option to select your reward based on the previous ranks in competitive.