Goblin Welder [Urza's Legacy] Commander 2013 where X is the total

where X is the total amount of life your opponents have lost this turn

Set: Double Masters Type: Land — Urza's Tower Rarity: Rare {T}: Add {C}

We encountered a valley topped with immense boulders and eerie rock formations

−X: Exile each permanent with mana value X or less that's one or more colors

reveal the top ten cards of your library

Goblin Welder [Urza's Legacy] Commander 2013 where X is the totalSet: Urza's Legacy Type: Creature Goblin Artificer Rarity: Rare Cost: {R} {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. "I wrecked your metal guy, boss. But look! I made you an ashtray."