Coal Barrier

The user creates a mind solid wall of coal as a form of defence. Chakra is either converted to coalh within the body and then spat out to form the wall or the user can manipulate pre-existing coal to form the wall. The coal then instantly rises up and takes form. The barrier itself is also coated with chakra, making its strength incomparable to that of a normal mud wall. Because of the coal's special characteristics, the wall is highly resistant against, for instance, fire.