Target permanent's controller sacrifices it. If he or she does, that player reveals cards from the top of his or her library until he or she reveals a permanent card that shares a card type with the sacrificed permanent, puts that card onto the battlefield, then shuffles his or her library.
Splice onto Arcane {2}{U}{U} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)