Psychic Allergy

Enchantment

As this enchantment enters, choose a color.

At the beginning of each opponent's upkeep, this enchantment deals X damage to that player, where X is the number of nontoken permanents of the chosen color they control.

At the beginning of your upkeep, destroy this enchantment unless you sacrifice two Islands.

Psychic Allergy is on the reserved list, which means WOTC has self-imposed restrictions from making functional reprints of this card.