Ruinous Gremlin [Mystery Booster] Serpent Set: Revised Edition Type: Instant

Set: Revised Edition Type: Instant Rarity: Uncommon Cost: {B} As an additional cost to cast this spell

or destroy target permanent if it is blue

Set: Kaladesh Inventions Type: Legendary Artifact Rarity: Mythic Cost: {0} Metalcraft — {T}: Add one mana of any color

Set: Beta Edition Type: Enchantment Rarity: Common Cost: {1}{W} {1}: The next time a black source of your choice would deal damage to you this turn

Ruinous Gremlin [Mystery Booster] Serpent Set: Revised Edition Type: InstantSet: Mystery Booster Type: Creature Gremlin Rarity: Common Cost: {R} {2}{R}, Sacrifice Ruinous Gremlin: Destroy target artifact. City officials once sent twenty gleaming automatons to exterminate a nest of gremlins. They soon saw the error of their ways.