Keyblade

From Ultionicle

The Keyblade is a key-shaped weapon with the power to lock and unlock all manner of doors and keyholes.The Keyblade chooses its wielder and will appear in that person's hand when summoned.Another important power is that it can lock the "heart" of a world, preventing it from being destroyed by Darkness,Rahkshi of Darkness and Organization XIV.There are different Keyblades, possessed by various characters in Ultionicle and Ultionicle Studios.