By card number
The simplest organization method, consisting of creating a single packet ranked by card number. Just take note of the card number during the draw in order to find it easily. At the end of the game, you will just have to put the cards you have played into the correct sequence.
By Card type
You can rank your cards in as many packets as there are card type (up to 8 packets: Weapon, Armor, Fury, Tactical, Spell, Fury, Interruption, Upgrade). You just need to note the card type and its number to find it easily. When you have discarded a card, put it back in the packet corresponding to its type (a Weapon card goes back to the Weapons packet). This ranking has the advantage of not having to be reordered at the start of the next game.