You can add cards to a collection from the dedicated Add Cards flow, then manage finish-specific quantities from the collection card detail view.
Add cards from a collection
Open Collections
Open the collection you want to add to
Choose Add Cards
Pick the game you want to browse
Search or filter the card database
Add the card to the collection
Game selection
The add-cards hub supports: Magic: The Gathering, Pokémon TCG, Yu-Gi-Oh!, Disney Lorcana, One Piece TCG, Riftbound, Flesh and Blood, and Gundam Card Game.
How quantity works
When you add a card, you can set how many copies to add. If the same card and finish already exist in that collection, TCG Mark increases the existing quantity instead of creating a duplicate.
Managing finish-specific copies
Open the collection
Open the card inside that collection
Use the Collection Quantity Manager
The quantity manager shows separate rows by finish, so you can add or remove finish-specific copies.
Removing cards
When you remove copies from a collection item, the owned quantity decreases. If the quantity reaches zero, that collection item is removed. Linked active listings can also be affected.
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