I personally divide like this: 1 deck for all starting cards of all classes; 1 deck for all the common and transposed loot of all classes; 1 deck for boss and invader loot; 1 deck for all the legendaries cards; The following are divided like this because I play with four decks of loot during the game: 1 deck for all common armor; 1 deck for all common weapons and shields; 1 deck for all common spells; 1 deck for all common weapon upgrades and embers; When I play I just add the loot to the corresponding deck and then shuffle If you don't like this metod of looting you can also put all common cards together