Cast Heaven Sent by paying ({U} magic symbol) ({R} magic symbol) .
Widespread Thieving triggers, creating two Treasure artifact tokens.
Activate the Treasures by tapping and sacrificing them, adding ({U} magic symbol) ({R} magic symbol) .
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.