Hullbreacher and Teferi's Puzzle Box on the battlefield.
Steps
On each of your opponent' draw steps, Teferi's Puzzle Box triggers, shuffling their hands into their libraries and drawing them 0 cards, giving you treasures equal to the number of cards they would have drawn.
Results
Opponents do not have a hand.
You gain treasures equal to the cards that were supposed to be drawn by opponents reduced by one.