icon	name	use	availability
	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	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	Allows the player to invade other worlds as a Black Phantom	dropped by the first unnamed Black Phantom slain
	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