Players can't draw more than one card per turn, Players shuffle their hands into their libraries during each draw step, Lock
At the beginning of each draw step, and after the player whose turn it is draws a card, Teferi's Puzzle Box triggers, causing all players to shuffle their hands into their libraries, and draw that many cards.
Because Spirit of the Labyrinth prevents any player from drawing more than one card, the active player will not draw any cards, and each other player will draw one card.
Component Cards
How It Works
At the beginning of each draw step, and after the player whose turn it is draws a card, Teferi's Puzzle Box triggers, causing all players to shuffle their hands into their libraries, and draw that many cards.
Because Spirit of the Labyrinth prevents any player from drawing more than one card, the active player will not draw any cards, and each other player will draw one card.