Combat Crab

Amphibious. The crab can breathe air and water. The Combat Crab takes no damage from poison gas.

Spellcasting. The crab is a 5th level spell caster. Wis is its spell casting ability with a +13 modifier to hit and a spell save DC of 21 and he has the following spells prepared.

Cantrips: Dancing lights, mage hand, create bonfire.

1st level: Burning hands, magic missile, Ice knife

2nd level: Misty step, hold person, scorching ray

3rd level: Dispel magic, Fireball

Claw. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (8d4 + 1) bludgeoning damage, and the target is grappled (escape DC 18). The crab has two claws, each of which can grapple only one target.