Fire Field

One of the spells to create a magical field is Fire Field.

Spell Description
Using Fire Field spell creates a magical fire field that will burn everyone that comes too close to it. However, its use is rather limited. If not cast on a narrow path, the caster's foes can simply walk around it. Care should be taken when being forced to pass through such a field, since falling unconscious on a fire field means certain death. The Ultima VII Part Two version of this field is slightly different, as it is composed of a field of blue flame, instead of normal fire. Otherwise, it acts the same as normal fire fields.

The spells Fire Ring and Flame Strike are stronger and more flexible fire spells utilizing fire fields.

History
Note that Energy Field was originally an umbrella term for all the types of magical fields: Poison Field, Fire Field, Sleep Field and Lightning Field, and the same spell would be used to create any of them. Later (after Ultima IV), different spells were designed for each of the fields, and the previous Lightning Field came to be known simply as Energy Field. However, at times the four spells are still called "energy field spells".

Trivia

 * Interestingly enough, despite fire fields on the Serpent Isle using cold-fire, the fire on the spell scrolls is not blue.