As an action, you can make 3 tentacle attacks from this helmet with a +9 to attack, dealing 1d6 bludgeoning damage. If all three tentacles his the same target, its speed is halfed, has disadvantage on Dexteritiy saving throws, and can only use either a bonus action or action on its turn, for 1 minute. The creature can make a DC 15 Constituion save at the end of its turn to end the effect.