Sacred Watcher* (CR 7)

Medium Deathless (Augmented Humanoid)
Alignment: Any Good
Initiative: +5; Senses: Listen +11 and Spot +11

AC: 12 (+1 Dex, +1 deflection), touch 12, flat-footed 11, or 21 (+1 Dex, +8 full plate, +2 large shield), touch 11, flat-footed 20
Hit Dice: 5d12 (32 hp)
Fort +4, Ref +2, Will +2
Speed: Fly 30 ft. (perfect)
Space: 5 ft./5 ft.
Base Attack +5; Grapple +8
Attack: Incorporeal touch +6 melee, or masterwork bastard sword +10 melee, or masterwork shortbow +7 ranged
Full Attack: Incorporeal touch +6 melee, or masterwork bastard sword +10 melee, or masterwork shortbow +7 ranged
Damage: Incorporeal touch 1d6 and positive energy, masterwork bastard sword 1d10+4/19-20), masterwork shortbow 1d6/x3
Special Attacks/Actions: Manifestation, positive energy touch
Abilities: Str 16, Dex 13, Con -, Int 10, Wis 12, Cha 12
Special Qualities: Deathless, incorporeal, rejuvenation, +4 turn resistance, ward
Feats: Blind-fight; Cleave; Exotic Weapon Proficiency (bastard sword); Improved Initiative; Power Attack B; Weapon Focus (bastard sword)
Skills: Climb +11, Hide +9, Listen +11, Ride +9, Search +8, and Spot +11
Advancement: By character class
Climate/Terrain: Any
Organization: Solitary, gang (2-4), or mob (7-12)
Treasure/Possessions: None

Source: Book of Exalted Deeds

When a character of great virtue dies while another person is in her care, she sometimes clings to a form of life as a sacred watcher. Not undead but deathless, a sacred watcher is very similar to a ghost. Rather than haunting the place of her death or otherwise harassing the living, however, a sacred guardian continues to watch over her ward until someone else can assume that responsibility.

Normally, a sacred watcher exists on the Ethereal Plane, where she can still watch over her ward but remain mostly out of sight. When the need arises, she can partially manifest on the Material Plane, enough to have some effect on her surroundings while remaining incorporeal. On the Ethereal Plane, a sacred watcher looks much as she did in life, except that she is surrounded with a softly glowing nimbus of silvery light. When manifested, she appears insubstantial and translucent, as though formed completely out of her silvery radiance.

This example uses a 5th-level human fighter as the base creature - in fact, a very similar fighter to the one used as the example for the ghost template in the Monster Manual.

See Sacred Watcher template.

Augmented Subtype

A creature receives this subtype whenever something happens to change its original type. Some creatures (those with an inherited template) are born with this subtype; others acquire it when they take on an acquired template. The augmented subtype is always paired with the creature's original type. For example, a wizard's raven familiar is a magical beast (augmented animal). A creature with the augmented subtype usually has the traits of its current type, but the features of its original type. For example, a wizard's raven familiar has an animal's features and the traits of a magical beast.