simplest edh ever

, Sacrifice this artifact: The next time a source of your choice would deal damage to you this turn, prevent half that damage, rounded down.

As an additional cost to cast this spell, discard X cards. Sickening Dreams deals X damage to each creature and each player.

Players can't draw cards. At the beginning of each player's draw step, that player loses 3 life, searches their library for a card, puts it into their hand, then shuffles.

Reveal the top card of your library and put that card into your hand. You lose life equal to its mana value. You may repeat this process any number of times.

(: Add .)

, : You gain 5 life. Shuffle this artifact and your graveyard into their owner's library.