[Phantasm]

Sounds like it'd be a variation of a Modular Ability build, with the deck as the source of what abilities are available. The number of slots would indicate the number of cards available at any given time.

Summons would probably be Ally (Minion; Summonable; Power Modifier), with buffs, debuffs, and attacks built as powers ala Sorcery, Divine Favor, and similar. Probably not bad places to turn to for various items.


Super Luck with the Wishing modifier would probably be a start for "I need to draw a particular card or we're sunk" and having it be the right one. Balance Wishing with an Accessibility for "only cards in my deck"; not sure about pricing.