Useful suggestions

holo option in collection

Filter in collection (colour, cost, might etc)

Smaller column size in collection so we can see more than 4-6 cards. When the collection is 400 cards we are endlessly scrolling.

“-“ and “+” buttons in collection on every card without us needed to tap and open the card and then scroll down to reach the buttons

Search bar in collection

Hold to move cards in collection or sort features by number, cost, might, etc.