Psychic Allergy

Enchantment, 3UU (5)
As Psychic Allergy comes into play, choose a color.

At the beginning of each opponent's upkeep, Psychic Allergy deals X damage to that player, where X is the number of cards of the chosen color he or she controls.

At the beginning of your upkeep, sacrifice Psychic Allergy unless you sacrifice two Islands.¹
Illus. Mark Tedin

Crystal Keep Rulings Summaries

• Does not count token creatures because the card says it counts "cards". [Aahz 1995/01/24]
• It affects all opponents in a multi-player game. [D'Angelo 1999/08/01]
• Extended tournaments (see Rule 803) have banned this card since 1999/10/01.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/2)	The Dark (Rare)