Spell of Shattered Sight

The Spell of Shattered Sight is a spell featured on ABC's Once Upon a Time. It first appears in the eighth episode of the fourth season.

Ways to Break the Spell

 * A counter-spell can be created. One of its ingredients is a lock of hair of someone that has been under the spell.
 * This ingredient, however, can be replaced by mirror dust used to cast the spell.
 * The caster of the spell can choose to spare someone from suffering its effects.
 * The caster of the spell must be killed.
 * In the tale of The Trolden Glass, the King was killed by his people.
 * Realizing she always have been loved by her sisters, Ingrid chose to sacrifice herself in order to stop the spell.

Trivia

 * In the original fairytale, the troll mirror is shattered accidentally and falls from the skies, with its smaller pieces entering people's eyes and hearts and making them see the worst in everything.