To answer a quick question, here’s how you can build a variety of the weapon-specialist feats in Eclipse classless d20.
Why bother when you can just use the original Feats? After all, Eclipse is compatible with almost any d20 rules set.
Partly because, when you take them apart, sometimes you can save a few character points – and character points are always precious. Mostly because building them in Eclipse allows you to expand on them, build variants on them, extend the progression, buy the abilities you want without tracking odd prerequisites, and modify them to get everything precisely the way you want it – and that’s what Eclipse is all about.
It’s also partly because this way you just need Eclipse, rather than several seperate books.
Weapon Focus: +1 Warcraft (BAB), Specialized/only with a particular weapon type, Corrupted/does not add to iterative attacks, for a total of 2 CP.
Greater Weapon Focus: +1 Warcraft, (BAB), Specialized for double effect/only with a particular weapon type, Corrupted/does not add to iterative attacks, for a total of 4 CP – or +2 CP over Weapon Focus.
Weapon Specialization: Augment Attack with chosen weapon, two occurrences of +1 damage at 3 CP each (very commonly used), for a total of 6 CP.
Greater Weapon Specialization: Augment Attack with chosen weapon, two more occurrences of +1 damage at 3 CP each (very commonly used), for a total of +4 damage with the chosen weapon type and +6 CP.
Weapon Mastery: +1 Warcraft, Corrupted/does not add to iterative attacks, Specialized for double effect/only with weapons doing a particular type of damage, must choose between Missile and Melee weapons (4 CP), Augment Attack/+2 damage with weapons doing a particular type of damage (very commonly used), Corrupted/user must choose between missile and melee weapons (4 CP), for a total of +8 CP.
Weapon Supremacy: OK, this one is so complicated that it has to be broken down as a list…
You get a +4 bonus on all checks to resist being disarmed. That’s Immunity/Uncommon, Minor, Minor (2 CP).
You can use your weapon against a foe who grapples you without penalty and without first making a grapple check. That’s Immunity/Uncommon, Minor, Trivial (1 CP).
When you take a full attack action, you can apply a +5 bonus to any single attack after your first strike. That’s Immunity/iterative attack penalty, Common, Minor, Minor, Corrupted/only usable on one attack per round (3 CP), .
Once per round before making an attack roll, you can instead choose to treat your d20 result as a 10. That’s Mastery/attack checks, Corrupted/can only be applied to one check per round (4 CP).
You gain a +1 bonus to AC. That’s Defender (6 CP).
That comes out to 16 CP, but it is all Specialized/only while using a particular type of weapon, for a net cost of 8 CP. That’s slightly more than the base cost for a Feat, but – since this particular sequence is a bit cheaper to start with, it all comes out just fine, as shown below:
Total Cost of these abilities: 2 CP (Weapon Focus) + 2 CP (Greater Weapon Focus) + 6 CP (Weapon Specialization) + 6 CP (Greater Weapon Specialization) + 8 CP (Weapon Mastery) + 8 CP (Weapon Supremacy) = 32 CP, which actually saves 4 CP on the base 36 CP estimated cost of a six-feat sequence. Go ahead and spend those on something else – preferably, for my tastes, on something non-combative. It’s on me.