Remembrance | Magic: The Gathering
Formats Remembrance is Legal in
Official Oracle Text for Remembrance
Official Rulings for Remembrance
10/4/2004 : Because the "search" requires you to find a card with certain characteristics, you don't have to find the card if you don't want to.
3/1/2010 : If a card which is a creature only due to an effect goes to the graveyard, you can search for another copy of that card even though the card in your library won't be a creature card.