Since everybody will start in Battlefore Reborn with just the starting cards and 0 upgrades, it will probably be the easiest way to gain the majority of the upgrades by playing PvE maps. Therefore, I made a tool in excel to help collecting cards and their upgrades. The idea is that you can insert all the cards you have and the upgrades you want (optional with a priority) in the tool and it will tell you which maps you will need to play. I added card information like edition, faction, type, tier,