This spell creates an anchored plane of ice or a hemisphere of
ice, depending on the version selected. A wall of ice cannot form
in an area occupied by physical objects or creatures. Its surface
must be smooth and unbroken when created. Fire, including
fireball and red dragon breath, can melt a wall of ice. It deals
full damage to the wall (instead of the normal half damage
suffered by objects). Suddenly melting the wall of ice creates a
great cloud of steamy fog that lasts for 10 minutes.
Ice Plane: A sheet of strong, hard ice appears. The wall is 1
inch thick per caster level. It covers up to a 10-foot-square
area per caster level (so a 10th-level wizard can create a wall
of ice 100 feet long and 10 feet high, a wall 50 feet long and 20
feet high, etc.). The plane can be oriented in any fashion as
long as it is anchored. A vertical wall need only be anchored on
the floor, while a horizontal or slanting wall must be anchored
on two opposite sides.
The wall is primarily defensive in nature and is used to stop
pursuers from following the character and the like. Each 10-foot
square of wall has 3 hit points per inch of thickness. Creatures
can hit the wall automatically. A section of wall whose hit
points drop to 0 is breached. If a creature tries to break
through the wall with a single attack, the DC for the Strength
check is 15 + caster level.
Even when the ice has been broken through, a sheet of frigid
air remains. Any creature stepping through it (including the one
who broke through the wall) takes 1d6 points of cold damage +1
point per caster level.
Hemisphere: The wall takes the form of a hemisphere whose
maximum radius is 3 feet +1 foot per caster level. Thus, a
7th-level caster can create a hemisphere 10 feet in radius. It is
as hard to break through as the ice plane form, but it does not
deal damage to those who go through a breach.
The character can create the hemisphere so that it traps one
or more creatures, though these creatures can avoid being trapped
by the hemisphere by making successful Reflex saves.