You cover undead creature you have animated with a shroud of energy. This energy can be whatever type you wish: acid, cold, electricity, fire, or sonic. Acid shrouds drip with dark, bubbling effluvium; cold shrouds are icy blue and glistening; electricity shrouds crackle with lightning; fire shrouds appear to be molten and burning; and sonic shrouds appear as distortions in the air accompanied by a shrill shriek. The undead is granted +2 turn resistance, +2 natural armor. It inflicts an additional 1d6 points of elemental damage (whatever type is appropriate to the shroud) when it strikes a foe. It also inflicts 1d6 points of damage when touched or when struck by natural weapons. An undead creature may have only one elemental shroud cast upon it at a time.