icon name use availability
blue eye stone icon Blue Eye Stone Lay down a blue sign for others to see. The player then assists the host in the form of an allied Blue Phantom. acquired after clearing 1-1
white eye stone icon White Eye Stone Returns a blue phantom to his/her world, or; as a host, gives the option to send away summoned Blue Phantoms acquired after clearing 1-1
black eye stone icon Black Eye Stone Allows the player to invade other worlds as a Black Phantom dropped by the first unnamed Black Phantom slain
red eye stone icon Red Eye Stone lay down a red sign for others to see. If summoned, fight the host and any phantoms for Souls acquired after killing the Maiden in Black in the End Game scenario