Mana Crypt [Mystery Booster] Goblin Warrior these devices doubled the output

these devices doubled the output of Amrit Vatyam's forges

Set: Guilds of Ravnica Type: Land — Mountain Plains Rarity: Rare ({T}: Add {R} or {W}

"Why listen to the mumblings of wizards when the lash speaks true

Battle-Forged becomes a 4/4 Human Soldier creature with indestructible that's still a planeswalker

Set: Collectors' Edition Type: Artifact Rarity: Uncommon Cost: {2} At the beginning of each player's upkeep

Mana Crypt [Mystery Booster] Goblin Warrior these devices doubled the outputSet: Mystery Booster Type: Artifact Rarity: Mythic Cost: {0} At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you. {T}: Add {C}{C}.