Survival of the Fittest

Set
Exodus
Rarity
Rare
Text
, Discard a creature card: Search your library for a creature card, reveal that card, and put it into your hand. Then shuffle your library.
Legality
Legal in: Commander, Duel, Vintage
Banned in: Legacy
Rulings
2004-10-04: 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.