Psychic Allergy

Enchantment, 3UU (5)
As Psychic Allergy enters the battlefield, 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 nontoken permanents of the chosen color he or she controls.
At the beginning of your upkeep, destroy Psychic Allergy unless you sacrifice two Islands.¹
Illus. Mark Tedin

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: Does not count token creatures because the card says it counts "cards".
• 10/4/2004: It affects all opponents in a multi-player game.

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