Libromancer First Appearance (BACH-EN090)

When this card is activated: You can add 1 "Libromancer" monster from your Deck to your hand, with a different name than the cards you control. During your Main Phase: You can Ritual Summon 1 "Libromancer" Ritual Monster from your hand, by Tributing monsters from your hand or field whose total Levels equal or exceed its Level. You can only activate 1 "Libromancer First Appearance" per turn.

spell / Field, Battle of Chaos