You create a watery tentacle at a point you choose within range on top of solid ground or a body of water. This tentacle is size medium, has an AC of 13 and 30 hit points, has resistance to fire damage and to piercing, slashing, ancl bludgeoning damage from non-magical sources, and is vulnerable to cold damage. The tentacle uses your spellcasting ability score ancl modifier in place of its Strength score and modifier, but otherwise uses your statistics for determining its saving throws. This tentacle disappears when it drops to 0 hit points, or when the spell ends. When you first cast this spell, you can cause the tentacle to make a melee spell attack with your statistics against a creature within 10 feet of it. On a hit, the target takes bludgeoning damage equal to 3d6 + your spellcasting ability modifier. As a bonus action on your turn, you can command the tentacle to move up to 15 feet and repeat the attack against a creature within 10 feet of it. If the tentacle's attack hits, you may direct it to grapple a target instead of dealing damage. If it does, any attempts to escape the grapple are made against your spellcasting ability modifier plus your proficiency bonus. You may also use an action on your turn to direct the tentacle to act in accordance to your somatic gestures, performing functions such as lifting objects or moving up to 15 feet, but the tentacle will not attack unless you command it to do so with a bonus action, as above.