Mirror Crystals

Mirror Crystals ミラークリスタル - are used by Revive! Dark Precure 5 to transform into Precure. They must say a word '' Precure crystalization (プリキュアクリスタリゼーション)". In the past they were just crystals, but after giving all the energy from Miracle Lights Migirin and Hidarin turned crystals into items for transformation.