Energy Vortex

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When you play Energy Vortex, choose target opponent. <br> At the beginning of your upkeep, remove all energy counters from Energy Vortex. <br> During chosen opponent’s upkeep, he or she pays 1 for each energy counter on Energy Vortex, or it deals 3 damage to him or her. <br> X: Put X energy counters on Energy Vortex. Use this ability only during your upkeep.