Spellweaver Volute is a rare Enchantment — Aura card from Future Sight (FUT), collector number 59. Current market price: $1.17 (foil $11.62), TCGplayer market prices via Scryfall.
Enchant instant card in a graveyard Whenever you cast a sorcery spell, copy the enchanted instant card. You may cast the copy without paying its mana cost. If you do, exile the enchanted card and attach this Aura to another instant card in a graveyard.