Goblin Welder [Duel Decks: Elves vs. Inventors] Mountain Plains that player sacrifices a permanent

that player sacrifices a permanent unless they pay {1}

Set: Kaladesh Prerelease Promos Type: Enchantment Rarity: Rare Cost: {W} Creatures your opponents control enter the battlefield tapped

" This effect lasts indefinitely

Set: Portal Three Kingdoms Type: Instant Rarity: Uncommon Cost: {W} Cast this spell only during the declare attackers step and only if you've been attacked this step

Goblin Welder [Duel Decks: Elves vs. Inventors] Mountain Plains that player sacrifices a permanentSet: Duel Decks: Elves vs. Inventors Type: Creature Goblin Artificer Rarity: Mythic 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.