Death Knight Template
This template can be added to any fallen paladin or lawful good warrior, the creature’s type changes to “Undead”, but uses all the base creature’s stats and special except as noted here.
Hit Dice increase to d12

Speed stays the same.

AC: Death Knights wear the same armor as they did in life, but no matter the quality of the armor, the AC is always 20 (modified only by size).

Attacks: The death knight retains the attacks it had in life, but prefers to use its magical sword.  

Damage: As the weapon used.

Special Attacks: A death knight has an entire arsenal of spell-like abilities at its disposal.  It constantly generates fear in a 5-foot radius, and it can cast detect magic and wall of ice at will.  Twice per day , it can cast dispel magic.  Once per day, it can use either power word, blind, power word, kill, or power word, stun.  It can also cast symbol (fear and pain, two different spells) once per day, as well as a fireball once per day.  All of its magical spells function at the 20th level of ability.  
	Death Knights all have a magical sword.  These swords are ususally: Long Sword +2, Two-handed Sword +3 or +4, Short Sword of Quickness, Short Sword of Dancing, or a Short Sword of Life Stealing.

Special Qualities: Death Knights cannot be turned, but they can be dispelled by a holy word spell.  It has the power over undead of a 6th level evil preist.  Its has SR 15, and if a 11 or lower is rolled, the spell is reflected back at the caster.  If the Death Knight is a fallen Paladin, the paladin loses all holy spells, skills, and powers.

Saves: Same

Abilities: Strength raises to 20, Intelligence raises to 18, and have no Constitution score.  

Skills: Same
 
Feats: Same

Climate/Terrain: Any
Organization: Solitary
Challenge Rating: Same as the base creature +4
Treasure: Standard
Alignment: Shifts to Chaotic Evil
Advancement: Same as the base creature