Evermind is a uncommon Instant — Arcane card from Saviors of Kamigawa (SOK), collector number 37. Current market price: $0.29 (foil $1.48), TCGplayer market prices via Scryfall.
(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.)