The Bogardan Arcane torture of proserity

Players have no maximum hand size. At the beginning of each player's draw step, that player draws an additional card, then discards a card.

As this artifact enters, choose an opponent. At the beginning of the chosen player's upkeep, this artifact deals X damage to that player, where X is the number of cards in their hand minus 4.

Each player draws X cards.

Each player can't cast more than one spell each turn.