wall of perilous fire
Class: warlock : 3
Syntax: cast CLASS wall of perilous fire [on <exit>]

This invocation is quite similar to the mage spell 'wall of fire', save that it is conjured purely of planar energy. It allows the caster to create a wall of brilliant blue flames around himself, protectively, or in front of an exit, so all who pass through that exit will be scorched by the flames. Half of the damage done is fire, but the rest results from supernatural power and cannot be resisted. The warlock who casts this spell must keep concentration on the wall to maintain its existence, and may type <remove wall> to quench the flames.