Assemble: Coil Skates

Requires: Boots, scrap metal, a spring.
You modify your boots to contain retractable
roller-skates. While the Coil Skates are active,
you have increased movement speed while
moving over flat surfaces. Whenever you are
hit by a physical attack while the Coil Skates
are active, roll GRACE. If you roll less than a
partial success, you fall and become prone.
If you roll a full success when crafting this,
the Coil Skates appear stylish and daring.
If not, they look incredibly stupid.