Muck to Metal is a 
Free Action. You can use this ability to physically harden your body, increasing your 
Armour Class but reducing your Movement Speed.
Description
Harden your slippery body into a substance like steel, increasing your Armour Class by 2, but reducing your Movement Speed by 
6 m / 20 ft.
Costs 5m / 16ft Movement Speed.
Properties
- Details:
- Range: Self
Condition: Transmuted to Steel
Duration: 4 turns
- The myrmidon's Armour Class is increased by 2, but its movement speed has been reduced by 6 m / 20 ft.[See Notes]
How to learn
Used by creatures: Wild Shape: Earth Myrmidon