Black Hand of Fate

 The caster points to their target and clenches their fist, the casters hand becomes envelope in necrotic energy that begins to stop the targets heart.

The target must make a Constitution saving throw. On a failed save, it takes 4d6 necrotic damage per round, add 1D6 to the total per round after 1st round,  half  damage on a successful save per round.

The damage can't reduce the target's hit points below 1.  if the target is reduced to 1 hit point it must make a CON save vrs DC 15 or is rendered unconscious for 1 round. Every level above 3rd add 1D6 to the base and 1D6 to the added damage.

If the caster takes damage and fails a concentration check the spell ends.

Target must be in line of sight, if line of sight is broken the spell ends.