Anyu's Water Cloak (Arteria)

You create whip-like tendrils of water on your arms. As part of the action of casting this spell you may make a melee spell attack against a creature that you can see that is within 30 feet of you dealing 3d10 bludgeoning damage on a success. You can make attacks with this spell as an action and/or bonus action. If you successfully hit a target with both tendrils they must make a Dexterity saving throw. On a failed save, the creature is either knocked prone or grappled and pulled up to 25 feet closer to you.

Using a Higher-Level Spell Slot. The damage increases by 1d10 for each spell slot level above 1.