Two-Headed Giant Tournament

Enchantment	BBB (3)	Two-Headed Giant Tournament (Special)
Whenever an opponent draws a card, Underworld Dreams deals 1 damage to him or her.

Only affects the drawing of cards. It does not affect spells like Demonic Tutor, Millstone, or Petra Sphinx which affect the library but do not say "draw" a card. [bethmo 1994/06/22]
Affects all draws even if you have to put the cards back afterwards. This ruling applies to things like Sylvan Library and Brainstorm. [D'Angelo 1995/07/11]
In a multi-player game, it affects all opponents. [D'Angelo 2000/03/03]
If multiple cards are drawn at once, this card triggers once for each card drawn. [D'Angelo 2000/03/03]
Vintage tournaments (see Rule 801) restricted this card from 1994/08/01 until 1999/10/01.
Legacy tournaments (see Rule 802) banned this card until 1999/10/01.
Extended tournaments (see Rule 803) banned this card until 2003/09/01.
Standard (Type 2) tournaments (see Rule 804) banned this card until 2003/09/01.