Goblin Welder is a rare Creature — Goblin Artificer card from Commander 2014 (C14), collector number 177. Current market price: $22.35, TCGplayer market prices via Scryfall.
{T}: Choose target artifact a player controls and target artifact card in that player's graveyard. If both targets are still legal as this ability resolves, that player simultaneously sacrifices the artifact and returns the artifact card to the battlefield.