Corrupted Conscience [Mystery Booster] Condition:Moderately Played Set: Onslaught Type: Basic Land

Set: Onslaught Type: Basic Land — Mountain Rarity: Common ({T}: Add {R}

Set: Mystery Booster Type: Instant Rarity: Common Cost: {1}{U} Return target creature you control and target creature you don't control to their owners' hands

Set: Mercadian Masques Type: Instant Common Cost: {1}{U} Return target artifact

Set: Commander 2018 Type: Artifact Rare Cost: {2} {2}

Corrupted Conscience [Mystery Booster] Condition:Moderately Played Set: Onslaught Type: Basic LandSet: Mystery Booster Type: Enchantment Aura Rarity: Uncommon Cost: {3}{U}{U} Enchant creature You control enchanted creature. Enchanted creature has infect. (It deals damage to creatures in the form of 1 1 counters and to players in the form of poison counters.) Karn's creation is now his master.