In Warpforge, decks are selected right before entering a match.

On Multiplayer games, after selecting the game mode, you can press on "Change Deck" on the bottom-right to view the list of your legal decks for this game mode. Press on your preferred deck and then press "Select Deck".

On Draft games you will have to build a deck by drafting sets of cards. You can only play with the deck you have built during drafting. Every run requires a new drafted deck.

On Practice, you can only play with the prebuilt decks. You can choose a faction on the left vertical tab and then press on your preferred deck to equip it.

On Challenge matches, the last deck equipped on Multiplayer will be used. If you want to play your friends with a specific deck, please change it first on the Multiplayer mode and then send or accept the Challenge.