Tide of Koi

Clerics from Wa and Kozakura believe that koi, a type of carp that have a colourful scale, can bring more wealth and it can cast away doom. Koi can be blessed to ascend to the water realm, so it can be summoned by the clerics with a mind of peace and nature.

A tide created by a colourful koi comes out from you. Each creature in a 15-foot cube originating from you must make a Constitution saving throw. On a failed save, a creature takes 6d8 cold damage and is pushed 10 feet away from you. On a successful save, the creature takes half as much damage and isn't pushed.