Mirrari Notes

Catalogue 4 (As this enters the library zone, put the top four cards of a library you own face up on top of this card as a new library. As this becomes empty, put it into its owner's graveyard.)
Whenever you draw a card from another library, return an instant or sorcery card from your graveyard with converted mana cost less than or equal to the number of libraries you own to your hand.