Heavy Carapace

Your carapace hardens and grows more dense, granting you the following benefits:

• Your weight doubles.
• When you aren’t wearing armor, your AC is 17 (your Dexterity modifier doesn’t affect this number). You can use your natural armor to determine your AC if the armor you wear would leave you with a lower AC. A shield’s benefits apply as normal while you use your natural armor.
• You have advantage on Strength checks and saving throws made against effects that would push you or knock you prone.
• Your pincers gain the heavy property, and you can deal bludgeoning or slashing damage (your choice) equal to 1d8 + your Strength modifier when you hit with them.