STEEL WALL

STEEL WALL
Syntax:  cast 'steel wall'
 
This spell causes a spinning mass of steel shards to come into existence
around the caster.  Forming a sphere, the shards move in perfect
synchronization with the caster, avoiding any obstacles in their way except
those seeking to harm or reach the caster.  This spell cannot be cast if
'spell turning' is already in effect around the caster.