At the beginning of your upkeep, put a pin counter on this artifact.
At the beginning of your end step, if this artifact is untapped, destroy this artifact and it deals damage to you equal to the number of pin counters on it.


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: This artifact deals damage equal to the number of pin counters on it to any target. X is the number of pin counters on this artifact.
Voodoo Doll's second ability causes it to be destroyed regardless of whether it actually deals damage to you or not. Voodoo Doll is destroyed even if all the damage is prevented or redirected.