Lost Knowledge of the Wicked

(At the beginning of your upkeep, put a research
counter on this. Counters unlock cumulative effects.)
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(1)+: Whenever a creature dies, target opponent
loses 1 life and you gain 1 life.
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(4)+: At the beginning of your upkeep, you
draw a card and you lose 1 life.
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(7)+: Discard a card: Destroy target creature.