Booby Trap

Artifact, 6 (6)
As Booby Trap enters the battlefield, name a card other than a basic land card and choose an opponent.

The chosen player reveals each card he or she draws.

When the chosen player draws the named card, sacrifice Booby Trap. If you do, Booby Trap deals 10 damage to that player.¹
Illus. Doug Chaffee

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: The "if you do" part is only done if you successfully sacrifice this card. In other words, it has to be on the battlefield when the trigger resolves or it does not deal damage.
• 8/1/2005: The choice of which card to name is part of the resolution of the spell or ability which puts Booby Trap onto the battlefield.  It can't be countered.
• 8/1/2005: If an effect causes the player to draw multiple cards, each card is revealed as it's drawn. If Booby Trap's ability triggers, it will go on the stack once the card-drawing effect has concluded.
• 8/1/2005: If a single Booby Trap's ability triggers multiple times, then only the first ability to resolve causes Booby Trap to be sacrificed and damage to be dealt.
• 8/1/2005: If Booby Trap's last ability is countered, Booby Trap remains on the battlefield (and no damage is dealt).

Format Legality	Legal in Vintage, Legacy, Extended, MTGO Classic Banned in Standard
Printings (2/20)	Ninth Edition (Rare) Tempest (Rare)