Open a gateway to the space between the stars, a region crawling with unknown horrors (Concentration, 1 min). A 20-ft-radius Sphere of blackness and bitter cold appears around a point within range. Creatures inside are Blinded. Any creature starting its turn in the area takes 2d6 Cold damage; any creature ending its turn there makes a DEX save or takes 2d6 Acid damage.

Material: a pickled octopus tentacle