Enchantment, 3W (4) Whenever a nontoken creature you control is put into a graveyard from play, you may search your library for a creature card with the same name as that creature, reveal the card and put it into your hand. If you do, shuffle your library.1
Illus. Val Mayerik
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, but since the cards you find will not be creature cards, you cannot choose them. [D'Angelo 2003/09/08]
If a copy card, such as Clone, goes to the graveyard under this effect, you get to look for another copy of the card it was copying (not the Clone card). This is because a copy card actually takes on the name and initial characteristics of what it copies. [WotC Rules Team 1999/03/18]
You do not have to find a creature card if you do not want to. See Rule G19.4. [D'Angelo 2001/07/14]
Urza's Saga
(Rare)