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Psychic Allergy
The Dark - Rare
Enchantment
Mark Tedin
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.

Rulings