Guardian Spirit is an Acquired Template that can be applied to any Humanoid of at least 9 Hit Dice (Base Creature must have Levels as both Cleric and Fighter). They are also known as Vartha, and while some have become an Undead through intense greed, most are tasked guardians created by magic. They are one of the few Undead that aren't necessarily Evil. But for being pallid and shriveled one would not tell they weren't still alive.
"Intelligent Undead with no obvious weaknesses or weird compulsions? Sign me up."
"A thousand GP each ma'am."
Size and Type: Type becomes Undead, Size is unchanged.
Hit Dice: All current and future Hit Dice become d12's, and hit points are recalculated.
Armor Class: Natural Armor Bonus to AC improves by +2. Additionally, most Vartha are equipped with at least +2 Half-Plate Armor.
Attacks: Unchanged, but most Guardian Spirits have a +2 magical weapon.
Special Attacks: Retains all Special Attacks of the Base Creature.
Special Qualities: Retains all Special Qualities of the Base Creature, plus gains the following:
Darkvision 60 ft.
Turn Resistance +2
Immunities (Ex): Guardian Spirits are immune to Cold and Electricity damage.
Saves: Recalculate due to Ability Score changes.
Abilities: +8 Str, +6 Dex, +2 Int, +6 Wis, +4 Cha. Con becomes -.
Skills: Unchanged, but recalculate skill bonuses due to ability score changes..
Challenge Rating: +1
Level Adjustment: +3