The drake is surrounded by a whirling nimbus of tiny motes of starlight. A sighted creature that starts its turn within 10 feet of the drake must make a successful DC 18 Constitution saving throw or become incapacitated. At the start of a character's turn, a character can choose to avert its eyes and gain immunity against this effect until the start of its next turn, but it must treat the drake as invisible while the character's eyes are averted.