Watery Sphere

4th-Level Evocation
Casting Time: 1 action
Range: 90 feet
Components: VSM (a droplet of water)
Duration: (C) 1 minute

As in Xanathar's Guide to Everything except the following has been added:

At Higher Levels. When you cast this spell using a spell slot of 6th or 7th level, the radius of the sphere increases by 5 feet, and the sphere can restrain an additional four Medium or one Large creature, or a single Huge creature. When you cast this spell using a spell slot of 8th level or higher, the sphere can restrain an additional 4 Medium or one Large creature, or a single Gargantuan creature.

Source: XGE 170

Changelog

Added upcasting option.
Altered spell school to Evocation from Conjuration.