Hunger of Hadar

level 3 - conjuration
Casting Time: 1 action
Range: 150 feet
Components: V, S, M (a pickled octopus tentacle)
Duration: Concentration, up to 1 minute

Description not available (not OGL). Summary:

Creatures in a 20-ft-radius sphere take 2d6 cold damage et must succeed on a Dex. save or take 2d6 acid damage.
Player´s Handbook