DEITY: Fattum and Fortuna, the Siblings

Epochian and Eskendrell had two twin (fraternal) children: Fattum (Destin) and Fortuna (Chawncy). Lore says Eskendrell was bored, having seen everything. Epochian made a bet that he could show her things she had never seen. She took the bet and lost. His price was that she would bear a child with him. He got more than he asked for, she gave him twins. Hence, the saying.
The twins are forever bickering, constantly trying to prove whether Fate or Chance is the greater player in the world. Fattum and Fortuna are endlessly making bets for a single day. The bets expire at sunrise. Their bet must resolve before the sun rises. If Fattum offers Fortuna to extend it to another day, she knows she has lost the best.
Fattum has lived many futures. He has seen many versions of the future. But he can't know which will unfold for today's lives. He has lived so long; he cannot remember the thousands of centuries lived and all their permutations. The future is not fixed. No one can force him to reveal the future. No one. No one can read his mind, as it would induce insanity followed by death or a transformation into a nothic losing all knowledge of who and what they were before. A fate even a god cannot undo.
Fattum was born on the last day at the end of time. As the Last Immortal, he lives days in backward order. Fattum lives today (normally from sunrise to sunset and through the night) after having lived all the tomorrows. The first time a player encounters him is Fattum's last (unless he hid when crossing paths with them when the player was younger.
Fattum has an expert poker face, so all insight checks against him are made at -10. He finds those he likes, those he hates, and those who vex, challenge or surprise him equally wonderful. When he says goodbye to someone it is a first time meeting for them. He treats them as great friends, larger than life, or someone who will be missed. The assumption is that if Fattum crosses the path of an adventurer, it will not be the only time. His attention is on those who have significant destinies to live, destinies he has already seen.
Forchuna is more like her mother, Eskendrell, goddess of the adventure. 
Forchuna believes that random chance rules all of reality. She sees the world as a wonderful storm of random occurrences. Opportunities for greatness touch people randomly. Whether those people pursue that moment determines if they will approach greatness. If the opportunity was presented to others, then greatness would rise elsewhere. All lives are touched by random moments of great potential. Those moments are often as quiet as a mouse pissing on cotton. Others roar like a tornado grinding and mashing through a town, shredding everything into a debris-filled cyclone.
She is the ultimate gambler. She manipulates things to create unexpected twists, moving the potential of chance around to see who will grasp it. She loves to both lose or win a bet, as the uncertainty is what she relishes. Simple predictability, obeying expectations is a waste of life to her.
Forchuna bets on people. Often people who have a small and insignificant life. Ones who have no class, wealth, title, or family bearing that put them down a better path by birth.  She often masquerades and puts the possibility of adventure into people's hands.
Deck of Many Fates. Forchuna is said to be the creator of the Decks of Many Things. This deck has the same single design on every side of every card. But if shuffled and then split or a single card removed from the deck then the random card face is revealed and the magic is released. The card becomes a mundane card afterward. The arcane colleges have tracked over three hundred found cards, some are suspected forgeries. They can be from simple to world-changing, joyful to terrifying. Some of them have unconfirmed effects because the drawer of the card was never found.