Karn, Legacy Reforged (Future Sight) [Mystery Booster 2] Instant target opponent sacrifices a creature

target opponent sacrifices a creature or planeswalker

1 Planar die

If you don't

Set: Duskmourn: House of Horror Type: Enchantment Creature — Avatar Horror Rarity: Mythic Cost: {5}{W}{W} Impending 4—{2}{W}{W} (If you cast this spell for its impending cost

Karn, Legacy Reforged (Future Sight) [Mystery Booster 2] Instant target opponent sacrifices a creatureSet: Mystery Booster 2 Type: Legendary Artifact Creature Golem Rarity: Mythic Cost: {5} Karn, Legacy Reforged's power and toughness are each equal to the greatest mana value among artifacts you control. At the beginning of your upkeep, add {C} for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.