Name:		Shield

Object:		/doc/examples/spells/shield.c
		/doc/examples/spells/spell_book.c

Cost:		30 if on another person, 20 in outselves.

Description:	If success this spell summons a force field to surrond us and
		protect us like a normal piece of armour. The forcefield has
		an ac of 6. Seccess depends on th Wisdom and skill in defence
		spells of the caster. Duration of the forecfield depends on
		the intelligence and skill of caster.

		Duration = int / 3 + spell defence / 2 + 180

Requirements:   That you have the spell book in your inventory.

