Cast 'Stonehard Skin' changing your skin into a solid shell for 3 minutes. Has a chance of destroying weapons of attacking enemies.
Consumes 25% of your HP and this skin possesses the same amount of HP consumed.
It disappears when all the HP is consumed.
For monsters, it decreases 25% of Atk for 10 seconds at a fixed rate.
This skill cannot be used for a boss monster.