The hand of the caster of this spell turns into a large claw, resembling that of a giant lobster. For one minute, you gain a melee claw attack using your spell attack bonus. If the attack hits, the creature takes piercing damage equal to 3d6 plus your spellcasting modifier, and if the creature is Large or smaller, the target is grappled. This claw attack is magical.
A creature that starts its turn grappled by the claw takes piercing damage equal to 1d6 plus your spellcasting modifier. A creature grappled by the claw can use its action to escape by making a Strength or Dexterity check (its choice) against your spell save DC.
When you cast this spell using a spell slot of 4th or higher level, the damage increases by 1d6 for each slot level above 3rd.
* - (a piece of lobster shell)