To get this item, speak to Jash Suffernus [Secret Card Deck Maker], tell him you wish to give him a card from one of the columns, below, and he will add the energy to the deck. To fully charge the deck requires 10 cards from this table.
The creation of this item requires cards from 10 bosses from three instances.
If you hand over a card to store energy into the Secret Card Deck, it cannot be recovered! Please be careful.
There is also an NPC who asks for 5 random cards. These 5 change hourly. If you provide any of the 5 cards (the card should be in your backpack, not in the Monster Compendium), he will give a mysterious card that can be used to store energy into your Secret Card Deck. The NPC is right beside Jash Suffernus.