Water Orb (5e Creature)
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Small elemental, neutral
Damage Resistances acid, cold; bludgeoning, piercing, and slashing from nonmagical attacks
Slam. Melee Spell Attack: +4 to hit, reach 5 ft., one target. Hit: 10 (3d6) bludgeoning damage.
A sphere of roiling water that drips every so often, a water orb flies gracefully and fluidly. It can summon or destroy water, and it prefers to live around rivers and lakes.
Elemental Nature. A water orb doesn't require air, food, drink, or sleep.