Cauldron of Souls [Mystery Booster] Yanggu these devices doubled the output

these devices doubled the output of Amrit Vatyam's forges

Whenever you cast an instant or sorcery spell

Set: Shadows over Innistrad Type: Enchantment Rarity: Rare Cost: {1}{G} Creatures you control have "{T}: Add one mana of any color

Set: Legends Type: World Enchantment Rarity: Rare Cost: {3}{B} At the beginning of each player's upkeep

Cauldron of Souls [Mystery Booster] Yanggu these devices doubled the outputSet: Mystery Booster Type: Artifact Rarity: Rare Cost: {5} {T}: Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no 1 1 counters on it, return it to the battlefield under its owner's control with a 1 1 counter on it.)