Records of the Rotten

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 a creature card from your graveyard with converted mana cost less than or equal to the number of libraries you own to your hand.
"Ode to the fallen ones..."