Antiquities, +m/(cards\sin\s.*hand|each\scard\sin\syour\shand)/, +!hellbent (2)
At the beginning of your upkeep, you gain X life, where X is the number of cards in your hand minus 4.
As The Rack enters, choose an opponent.
At the beginning of the chosen player's upkeep, The Rack deals X damage to that player, where X is 3 minus the number of cards in their hand.
Gatherer works better in the Companion app!