Not long ago, trade tokens were introduced in Clash Royale. You can hold up to 5 of each unique trade token. The trade tokens can be found in the clan war loot bag, or they can be purchased from the shop.
What happens if you have 5 of a trade token and you get another from clan war loot or purchase one from the shop?
Best Answer
Per the wiki article on trade tokens; the last bullet point has the information you are looking for.