Suggest any edits that YOU ALL think are needed! I couldn't think of many disadvantages.
THIS DATAPACK REQUIRES THE ORIGIN MOD TO FUNCTION!!!

Grim
A terrifying creature to behold

Transparency
You turn nearly invisible when not exposed to the sky.

Arrow immunity
After years underground, you skin is hard as rock.

Questionable sanity
After being underground for so long, are you TRULY sane?

Stone level
You mine faster, however you are too destructive to gain stones such as iron with your bare hands.

Phase
You can phase through walls by walking into them, crouching lets you go down, use wisely...

Grim view
You can see everything with perfect clarity.

Cave Dweller
You burn in the sun, don't ask me why you missed out on vitamin D for too long.

Stoneskin
Your skin is tough like stone.
You may also become one with your surroundings.