One shot kill

: Look at the top card of target player's library. If it's a nonland card, you may pay 2 life. If you do, put it into that player's graveyard.

As this artifact enters, choose an opponent and a card name other than a basic land card name. The chosen player reveals each card they draw. When the chosen player draws a card with the chosen name, sacrifice this artifact. If you do, this artifact deals 10 damage to that player.

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.