Hmm, spellcheck is your friend. ;)
Str benefits melee attack also, obviously; Dex increases initiative, and Con increases HP as for anyone.
The post-table entries are redundant.
Really? Open Lock, Spellcraft, Disable Device, Lucid Dreaming, Use Psionic Device (to name five of the remaining worst offenders)?
Use a list that includes only the ones you want, not a list that excludes those you don't want.
These should be synchronized, I think, as a matter of symmetry. Also, am I correct in deducing that an ethically Neutral Combatant gains neither defensive stance nor rage?
Honor does not appear at first glance to gain any scaling benefits. Deceit is strictly superior to Rogue's ability, obviously (2d6 and +1 attack/3 levels vs 1d6/2 levels), which seems a little odd for a more generic class, especially one with full BAB.
Also, this and other scaling abilities should ideally mention the rate at which they scale in the text, rather than relying solely on the table.
Spelling out Greater Two-Weapon Fighting, Improved Two-Weapon Fighting is probably preferable, just as a minor point.
Where's Improved PBS/Swarm of Arrows from?
I suspect the repetitive "unarmed strikes" entries are intended to indicate scaling at the appropriate levels, but it's not entirely clear.
Just to be on the safe side, you should spell out the exact Pounce version you mean. Also, Pounce at 14th? Seems ... unpleasantly late.
Note that as written this does not allow them to qualify for Fighter-only feats.
Ouch. Irreversible, as in miracle/wish fail? That is seriously painful (in all senses of the word). I would have trouble justifying using this in play. Although... what qualifies as "surgery"?
Evasion itself isn't all that awesome (ring of, anyone?), but mettle, and even more so improved mettle, are quite sought-after. So this is pretty impressive, but hopefully not out of scale.
Minor nitpick: any character is technically "legendary" at 11.
Maybe refer to them as "living characters from ancient epics", or something similar?
Ow, this is ... no, please don't stack SR like this. Forcing a 1 on skill checks is a fairly powerful ability in its own right, granting Mage Slayer is also impressive, but stacking SR like this is torture to the d20-RNG. (It's like doubling up on total AC.) If you must put all three of these in, give them SR equal to 15+class level or 4+existing, whichever is higher. (Standard SR is nominally 11+ECL/CR.)
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So a True Neutral Templar can Smite anything not also True Neutral?
Should say "once per day".
I believe morally Neutral Templars should be forced to choose once, and not change it, like Neutral Clerics. The same applies to all other choices through this class.
... like this. Shouldn't aura of terror apply to enemies as a penalty? (Also, those should be morale bonuses.)
They may not take mercy and cruelty at the same level, or they may only ever choose mercies or cruelties?
I call true strike! This has basically the same problem an Archivist has: access to all divine lists, however obscure or restricted they were intended to be. Except this is worse in some ways, covering arcane lists as well.
I don't feel like mastering another variant system of magic right now, so I'll skip over this.
Does this combine with Measure of Conviction on a pounce or similar?
I believe that should be "as long as neither alignment conflicts with the templar's". Also, it's probably preferable to give full examples of the magic circle effects, broken out by alignment.
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On the whole, these look largely OK, although there are some specific trouble spots. When fixed, they'll probably be somewhere between T3 and T4, which should be fine.