Skykä

B-Rank - S-Rank Depending on the entety summoned. When a Warlock reaches for too much power, that power can completly consume them, leaving behind a shadowy figure, a gaunt skeletal husk is all that remains of the warlock, now completly under the control of a Demon or Eldrich Horror. The Skykä can move in unnatural ways, almost flying through the shadows.