Widespread Thieving triggers, creating two Treasure artifact tokens.
Activate the Treasures by tapping and sacrificing them, adding .
Resolve Heaven Sent, causing it to enter the battlefield with four chapter counters on it due to Doubling Season and Vorinclex.
Heaven Sent's first, second and third chapter ability trigger.
Resolve the first and second triggers, creating two Clue artifact tokens.
Resolve the third trigger, dealing 1 damage to each opponent, and causing you to draw seven cards if an opponent has 0 or less life, or otherwise exile Heaven Sent with the ability to play it this turn.
If Heaven Sent was exiled this way, repeat until Heaven Sent is not exiled.
This intricate loop relies on accelerating Heaven Sent straight to its final chapter the moment it enters the battlefield, supercharged by the explosive counter-doubling power of both Doubling Season and Vorinclex, Monstrous Raider. Whenever you cast the Saga, Widespread Thieving rewards your multicolored spellcasting by generating doubled Treasure tokens to fund your mana needs, while those same token creation effects cascade into a wealth of extra Clues. When Heaven Sent finishes its third chapter, it deals damage and exiles itself to be recast immediately, creating a self-sustaining cycle that buries your opponents in infinite damage, storm count, and artifact tokens.