'improved' extend spell?

[Lamoni]

I may have been hallucinating, but I thought I read somewhere about a feat that increased the spell duration up one category:
round/level to min/level
min/level to 10 min/level
10 min/level to hr/level

Well, first of all did I just imagine it? If not, where is it located and what are the prereqs and the spell level adjustment? If I did imagine it, what would you say would be a good house rule to implement this? I want to extend some spells, but don't care to have them last for 24 hours. Doubling the duration to last 20 minutes instead of 10 isn't good enough though.

Thanks.

 

[Crothian]

I've seen many people houserule extend to do something like that, but don't recall a printed feat that does

 

[kyloss]

I think I know

I Think I know the one you are talking about it is called persistent spell and I think it was in the FR players guide

 

[Lamoni]

I've seen many people houserule extend to do something like that, but don't recall a printed feat that does

Maybe that is where I read it from, a post describing a house rule

I Think I know the one you are talking about it is called persistent spell and I think it was in the FR players guide

I don't have the FR players guide, but persistent spell in Tome and Blood is the feat that extends the effect to 24 hours.

 

[Timeboxer]

I may have been hallucinating, but I thought I read somewhere about a feat that increased the spell duration up one category:
round/level to min/level
min/level to 10 min/level
10 min/level to hr/level

That sounds a lot like an inversion of Rapid Spell from Complete Divine, which reduces the casting time by one category. Might explain where it came from.