You magically disrupt the autonomous functions of a creature's body. 

Choose 1 target within range. The target must succeed a Constitution saving throw. 

On a failed save, a creature must concentrate (as if concentrating on a spell) for 1 minute to maintain its heartbeat. If the creature's concentration is broken for any reason, it dies. 

A creature may repeat the saving throw at the end of each turn, ending the effect on itself if successful. 

This spell has no effect on Undead or Constructs.