A nod to the borg.
Level: Sor/Wiz 5
Components: V, S, M
Casting Time: One action
Effect: Creature Touched
Duration: 10 rounds + 1 round per level.
Saving Throw: Yes (harmless)
Spell Resistance: Yes (harmless)
This spell gives the creature touched a unique immunity to certain types of weapon damage. Whenever the target is struck by a weapon, the magic of this spell ‘remembers’ the damage and begins to counteract it. This slowly becomes a form of damage reduction that gets progressively larger throughout the battle.
Every time the target is successfully damaged by a weapon type (bludgeoning, slashing, or piercing) this magic reduces the effect of that type of weapon by one point when used against the target. This effect is cumulative.
This effect is not limited to strikes from the same weapon, but weapon types in general (three slashing attacks from three separate sword wielding orcs will give the spell's target damage reduction of 3 versus slashing when the fourth orc strikes.) This damage reduction can reduce the damage to 0, but not less, and it will not increase his resistance if the spell's target takes no damage.
IE: Hentora the mage is attacked by three warriors on the road and casts Shifting Shield on himself. One warrior uses a club and the other two have longswords. The club wielder swings and misses, but the first sword wielded hits and does 5 points of damage. Hentora takes the damage and now has damage reduction 1 versus slashing (normally damage reduction of a type indicates the type of damage that ignore the reduction, for the purpose of Shifting Shield this is reversed). The second sword wielder hits and rolls 6 points of damage, Hentora takes 5 points (thanks to the first sword hit giving her a DR of 1 VS slashing) and she now has DR of 2 VS slashing. In the second round the club wielder hits for 4 points of damage and Hentora now has a DR of 1 VS bludgeoning. The first sword wielder hits and rolls for 6 points of damage, Hentora takes 4 as she had a DR of 2 VS slashing at the start of round. Now she has a DR of 3 VS slashing and a DR of 1 VS bludgeoning. The second sword wielder swings and hits for 3 points of slashing, not good enough to penetrate the DR of 3 VS slashing Hentora is currently enjoying. Since she took no damage from this last strike the slashing DR does not increase.
If the spell is cast on the same target again, the damage reduction he has accumulated returns to 0 across the board.
Once this spell has reached the point where the target has DR of 5+ in two of the three damage types he gains the armor affect Light Fortification (see magic armor in DMG) even if he does not wear armor. Once the spell reaches DR of 10+ in two of the three damage types he gains the armor affect of Medium Fortification. Finally, if he has DR 15+ in two types thanks to this spell he gains the armor affect of Heavy Fortification.
Also, conjuration healing spells confuse the Shifting Shield spell and cause it to be as if it had been dispelled (a useful trick when a NPC figures out when some one is under the effect of Shifting Shield). This does not count healing from potions or wands.
Special: This spell may not be increased in duration through the use of a skill, metamagic feat, or any other spell.
Material Component: A specially made triangle shaped pendant of no less than 500 gold piece value. Each side of the pendant reparesent one of the three types of damage (piercing, bludgeoning, and slashing).