Evermind [Saviors of Kamigawa]

Set: Saviors of Kamigawa Type: Instant — Arcane Rarity: Uncommon (Nonexistent mana costs can't be paid.)Draw a card.Splice onto Arcane {1}{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.)