E.21.7 Remove magical barrier [2934]

Usage:  USE 2934 <direction> [aura]
Time to learn: 28 days.
Time to use: 7 days.

Attempt to remove a magical barrier from the location in the given direction. If direction "0" is given, a barrier over the current location will be removed.

The chance that the barrier will be successfully removed is proportional to the aura invested in the attempt:

	aura	chance of success
	—-	—————–
	 1             10%
	 2             25%
	 3	       50%
	 4	       75%

When a magical barrier is removed, lingering effects of the spell prevent another barrier from being cast on the same location for four months.