Renowned Weaponsmith is a uncommon Creature — Human Artificer card from Fate Reforged (FRF), collector number 48. Current market price: $0.08 (foil $0.29), TCGplayer market prices via Scryfall.
{T}: Add {C}{C}. Spend this mana only to cast artifact spells or activate abilities of artifacts. {U}, {T}: Search your library for a card named Heart-Piercer Bow or Vial of Dragonfire, reveal it, put it into your hand, then shuffle.