This card is used to Ritual Summon "Herald of Perfection". You must also Tribute monsters from your hand or field whose total Levels equal exactly 6. When "Herald of Perfection" is Ritual Summoned by this card's effect: You can banish this card from your Graveyard, then target 1 of the monsters in your Graveyard that was Tributed for that Ritual Summon; return that target to your hand.