Here is my shot at the warlock templar (PDF version).
Warlock Templar (Wtp)
Hit Die
D8.
Requirements
To qualify to become a warlock templar, a character must fulfill all the following criteria.
Alignment
Within one step of patron sorcerer king on moral (good/evil) axis.
Class Skills
Appraise, Bluff, Craft, Concentration, Diplomacy, Forgery, Gather Information, Heal, Intimidate, Knowledge (any), Listen, Literacy, Profession (any), Sense Motive, Spellcraft, Search, Spot, Use Magic Device.
Skill Points at Each Level
4 + Int modifier.
Class Features
Weapon and Armor Proficiency
Warlock templar are proficient in all simple weapons. Since templar training involves some education in warfare, warlock templars receive two martial weapons proficiencies. Warlock templars are proficient in light armor but not with shields
Sigil (Sp): Every warlock templar receives a sigil that is the sign of their rank and station as a templar within their city’s templarate. The form of the sigil is unique to each city state but is always unmistakable for what it is. The sigil serves as your divine focus and allows you to use the spell-like powers arcane mark, purify food and drink, and slave scent a combined total of times equal to 3 + your Cha modifier.
Invocations : A warlock templar does not cast spells as regular templars do. Instead, he possesses a repertoire of attacks, defenses, and abilities known as invocations that require him to focus the energy that emanates from his Sorcerer Monarch. A warlock templar may use invocations at will with the following qualifications:
A warlock templar’s invocations are spell-like abilities; using an invocation is therefore a standard action that provokes attacks of opportunity. An invocation can be disrupted, just as a spell can be ruined during casting. A warlock templar is entitled to a Concentration check to successfully use an invocation if he is hit by an attack while invoking, just as a spellcaster would be. A warlock templar can choose to use an invocation defensively, by making a successful Concentration check, to avoid provoking attacks of opportunity. A warlock templar’s invocations are subject to spell resistance unless an invocation’s description specifically states otherwise. A warlock templar’s caster level with his invocations is equal to his warlock templar level.
The save DC for an invocation (if it allows a save) is 10 + equivalent spell level + the warlock templar’s Charisma modifier. Since spell-like abilities are not actually spells, a warlock templar cannot benefit from the Spell Focus feat. He can, however, benefit from the Ability Focus feat, as well as from feats that emulate metamagic effects for spell-like abilities, such as Quicken Spell-Like Ability and Empower Spell-Like Ability.
A warlock templar can select any invocation available to warlocks and can also choose from the invocations available to dragonfire adepts, except for those which modify breath weapons (as described in Dragon Magic). Unlike a standard warlock, a warlock templar’s invocations are divine magic based but are still subject to spell failure chance, just like their arcane warlock counterparts.
Secular Aptitude (Ex): At 1st level, you gain Secular Authority as a bonus feat. In addition, you receive a competence bonus to Secular Authority checks equal to half your warlock templar level.
Mitigate Corruption (Ex): You can mitigate the legal consequences of being caught being bribed or otherwise being financially corrupt by clever dissimulation. At 1st level you may take bribes or corruptly appropriate up to 1 Cp per day without legal consequences (you must still accept the bribes or illegally appropriate funds – the money does not come automatically). For every warlock templar level you have beyond first level, this legal immunity to financial corruption increases by 1 Cp per day. This does not protect the warlock templar from the consequences of other kinds of official corruption, like treason.
Detect Magic (Sp) : Beginning at 2nd level, a warlock can use detect magic as the spell at will. His caster level equals his class level.
Imbue Templar Item (Su): A warlock templar of 3rd level can use his supernatural power to craft magical items if he has the corresponding item crafting feat. He can substitute a Use Magic Device check (DC 15 + spell level) in place of a required templar spell he doesn’t know or can’t cast. Spells to be emulated must be drawn from the templar spell list staring on page 138 of the Dark Sun Core Rules and includes the spells of two spheres granted by his Sorcerer Monarch, which must be selected by the warlock templar on obtaining this ability and may not be changed. You may not emulate spells that exceed half your caster level (for example, a warlock with a caster level of 5 may not emulate a 3rd level spell. He must have 6 caster levels to do that).
If the check succeeds, the warlock templar can create magical item as if he had cast the required spell. If it fails, he cannot complete the item. He does not expend the XP or Cp costs for making the item; his progress is simply arrested. He cannot retry this Use Magic Device check for that spell until he gains a new level (in any class).
The warlock templar is considered to know the spells on the templar spell list and the spells on the two spheres that it knows for the purpose of activating spell trigger items.
Magical items created by a warlock templar are considered divine.
Templarate Training: At 4th-level, a warlock templar receives a bonus feat reflecting his privileged position and the training that comes along with it. These bonus feats must be drawn from the following: Alertness, Brew Potion, Deceitful, Deft Hands, Diligent, Improved Turning, Investigator, Leadership, Linguist, Kleptocrat, Magical Aptitude, Persuasive, Favorite, Improved Sigil, Dissimulated, Faithful Follower, Field Officer, Scribe Scroll, or Skill Focus. A warlock templar must still meet all prerequisites for a bonus feat. The warlock templar gains another bonus feat at 8th level, 12th level, 16th level, and 20th level.
Refocus Invocation: At 3rd level, select an invocation that you know and another that you do not know but is of a grade that you capable of invoking but not of a higher grade than the known invocation. You can switch between the two invocations after 8 hours rest. At 7th, 11th, 15th, and 19th level you can select another pair of invocations that you can switch between.
High Templar (Ex): At 14th level you are either a high templar, or merely respected or feared by other templars. Against templars and creatures with the secular authority feat, you gain a +2 to skill checks of Diplomacy, Intimidate, Bluff and Sense Motive. These bonuses do not apply to other templars with this ability.
Unbreakable Bond (Ex): At 20th level (or 20th warlock templar caster level, whichever comes first), the bond with the vortice from which the warlock templar draws divine magic becomes unbreakable. The vortice is always open to the warlock templar, and even the warlock templar’s Sorcerer Monarch patron cannot stop the warlock templar from receiving invocations. Even the death of the Sorcerer Monarch does not stop the warlock templar from receiving invocations. The warlock templar becomes aware of this strengthened bond, but the Sorcerer Monarch has no special way of knowing unless the Sorcerer Monarch cuts off the warlock templar from invocations and notices that the warlock templar can still invoke invocations.
