Renowned Weaponsmith

Pair (When you draft this card add the named cards
to your card pool)
Renown 1
{t}: add {c}{c}. Spend this mana only to cast
artifact spells or activate abilities of artifacts.
{u}, {t}: Search your library or sideboard for a
card named Heart-Piercer Bow or Vial of Dragonfire, reveal it, put it into your hand, then shuffle your library.