Anduin's Sphere of Traversal

A flowing clear material issues from your lofted chalice, forming a sphere with a 10 ft. emanation, and enveloping up to 8 other creatures that are no larger than medium in size within 5 ft. of you. This sphere can be telepathically controlled as a bonus action, and has a flying speed of 120 ft. The exterior of the sphere has an AC of 16 and 50 hit points. If the sphere's hit points are reduced to zero, the sphere shatters.
The exterior is permeable to water and most other liquids. This sphere cannot float, and will come to a complete stop upon contacting a body of liquid before sinking.