Problem 2: Furious Slashing
 

A class special ability grants the character the ability to use their Cha mod in place of their Int mod to meet the prerequisites of combat feats.

Is coding this even possible? If so, Help!

Like Swashbuckler's Finesse?

Substitutions like this are normally not something users can affect, but since there is already the sub, you can take advantage of that. Assign HasAbility.cSwsFiness to the hero and it should work.

Thanks Aaron, but this would also grant weapon finesse which they only gain limitedly, wouldn't it?

Ah, I wasn't suggesting you actually bootstrap Swashbuckler's Finesse to your class, just assign its HasAbility tag in a script on whatever ability actually grants the pre-req swap. That should get you the pre-req sub and not any of the other stuff, IIRC.

oh ok can you give me a scripting hint, I am still rather new at this?

First 10000

You might be interested in the "Intro to Adding Content" seminar I recorded at GenCon a couple years back:

https://www.youtube.com/watch?v=ZzrfEMuG_cw

cool, I'll check it out