From the introduction:
The StoryGate Chronicles uses playing cards for its game rules. Each player needs an ordinary pack of playing cards.
Each Suit on the deck represents a different aspect of the character.
Hearts: characters energy, physical skills and combat energy.
Spades: characters endurance, toughness, resilience and stamina.
Diamonds: characters intellect, wits and education.
Clubs: characters charisma, magical potential and ego.
Players hold a hand of seven cards which may be played during action resolution. Applicable Skills add to the card value. The modified value is compared to a target number.