Tinker

Set
Urza's Legacy
Rarity
Uncommon
Text
As an additional cost to cast this spell, sacrifice an artifact. Search your library for an artifact card and put that card onto the battlefield. Then shuffle your library.
Legality
Banned in: Commander, Duel, Legacy
Restricted in: Vintage
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.