Diabolic Lesson

As an additional cost to cast this spell you may sacrifice a creature.
Search your library for a card and put that card into your hand. Then shuffle your library. If you sacrificed a creature as you cast this spell, target player sacrifices a creature.
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Make them watch as their nightmares, your goals, reach fruition, as they are forced to watch a loved one die.
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This card is dedicated to Estuways. Thanks for the support!