Gorgon's Eye

As long as Gorgon's Eye is on the battlefield, any creature an opponent controls that become tapped gain a Gorgon counter.

When Gorgon's Eye is removed from the field, remove any Gorgon counters on the field.

(A card with a Gorgon counter cannot be tapped and if a creature with a Gorgon counter is destroyed, the controller of that creature takes damage equal to half that creature's toughness. Round up if odd.)