In Duel of Champions, you could obtain free packs or gold by using Redeem Codes in the shop.
Here I will make a list of all the codes you could use to expand your collection. You have to enter your code after clicking on Redeem Code.
Generate a code on penny-arcade.com for 275 seals and 3 Reinforcement packs
If you know other codes, share them into comments, I will add them to the article !
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