I just wanna add my two copper pieces because ironically I thought about the same topic today.
I just read the description for prerequisite and there is written according to SRD:
By just following this eplanation I look at my record sheet and know if I can pick up this feat or not.
But wait. What is my ability score by RAW? Let's say I want to take Power Attack, have a STR Score of 12 and Gauntlets of Ogre Power.
Now what do I have?
Do I have a strength score of 14? Or a strength score of 12 with a +2 enhancement bonus?
First of all I must admit that I tend to the first explanation. So the player would not be allowed to take the Power Attack - Feat with his gauntlets.
But on the other hand let me look at the very important Two-Weapon Fighting Feat. You must have a DEX score of 15.
Assume you use the standart 25 point buy system and do not want to play an elf.
Thus you have to spend 8 points for a single ability. That hurts but is possible. As you do not need much other abilities if you play a straight forward fighter.
But then you wanna take Improved Two Weapon Fighting when you reach 6th level. This needs a DEX score of 17. Uff.
Okay, you can increase your DEX Score at 4th level by one which makes it to 16 but that is not enough.
So back at first level you are forced to plan ahead. You have to make it DEX 16 to possibly achieve a score of 17 at 6th level.
But that costs you 10 *** points.
With this calculation you are able to take Greater Two Weapon Fighting at 12th level where your dex score is increased again by 2 (8th level and 12th level).
So I'd say there are two possibilities:
First it is allowed that magic items count for the ability score increase to meet the prerequisites.
Second. If I look at the TWF example it will add a new flavor to your campaign if elves are reknown for their two weapon fighting ability compared to the other races which will have significiant lacks in other ability scores.
Cheers, Evil DM.
I just read the description for prerequisite and there is written according to SRD:
A minimum ability score...
By just following this eplanation I look at my record sheet and know if I can pick up this feat or not.
But wait. What is my ability score by RAW? Let's say I want to take Power Attack, have a STR Score of 12 and Gauntlets of Ogre Power.
Now what do I have?
Do I have a strength score of 14? Or a strength score of 12 with a +2 enhancement bonus?
First of all I must admit that I tend to the first explanation. So the player would not be allowed to take the Power Attack - Feat with his gauntlets.
But on the other hand let me look at the very important Two-Weapon Fighting Feat. You must have a DEX score of 15.
Assume you use the standart 25 point buy system and do not want to play an elf.
Thus you have to spend 8 points for a single ability. That hurts but is possible. As you do not need much other abilities if you play a straight forward fighter.
But then you wanna take Improved Two Weapon Fighting when you reach 6th level. This needs a DEX score of 17. Uff.
Okay, you can increase your DEX Score at 4th level by one which makes it to 16 but that is not enough.
So back at first level you are forced to plan ahead. You have to make it DEX 16 to possibly achieve a score of 17 at 6th level.
But that costs you 10 *** points.
With this calculation you are able to take Greater Two Weapon Fighting at 12th level where your dex score is increased again by 2 (8th level and 12th level).
So I'd say there are two possibilities:
First it is allowed that magic items count for the ability score increase to meet the prerequisites.
Second. If I look at the TWF example it will add a new flavor to your campaign if elves are reknown for their two weapon fighting ability compared to the other races which will have significiant lacks in other ability scores.
Cheers, Evil DM.