increase duration of spells

[Shinoskay]

I remember a thing that would improve aspects of spells by a step... either it makes the casting time one step less or it makes duration one step more... may be two different things that impact either side respectfully.

Specifically, I'm looking for a thing that increases duration by a step.

[Biggus]

By "a step" do you mean rounds to minutes, minutes to 10 minutes etc?

The only thing I know of which can increase durations longer than Extend Spell (other than Persistent Spell) is the Thaumaturgist's Extended Summoning ability, which unlike most similar abilities stacks with Extend Spell to allow a tripling of the summon duration.

[Rebel7284]

I remember hearing that pathfinder did something like that to persistent spell to try to balance it. Don't think anything like that exists in first party 3.x

[MaxiDuRaritry]

By "a step" do you mean rounds to minutes, minutes to 10 minutes etc?

The only thing I know of which can increase durations longer than Extend Spell (other than Persistent Spell) is the Thaumaturgist's Extended Summoning ability, which unlike most similar abilities stacks with Extend Spell to allow a tripling of the summon duration.Actually, real-world values such as durations and distances use actual math, rather than D&D math. It's mainly dice and damage multiplication that use D&D math.

[Zanos]

Rapid Spell decreases the casting time of a spell in the manner you're describing.

There's a rule for making custom spells in Practical Enchanter, a 3rd party book, that allows you to bump the duration by one step in the manner you describe, in exchange for 1 spell level.

[MaxiDuRaritry]

Metapsionic feats, unlike metamagic feats, can be stacked multiple times, so long as you have enough psionic foci (or via the dominant ideal ardent ACF), so multi-Extend.

You could also do the (un)hallow + acorn of far travel trick (https://forums.giantitp.com/showthread.php?546179-Un-Hallow-that-Stacks) to make the effects you want effectively permanent.

[Bullet06320]

Rapid Spell decreases the casting time of a spell in the manner you're describing.

conjuror variant for summon monster spell


Rapid Summoning (Ex)
Any time a conjurer using this variant casts a summon monster spell, its casting time is 1 standard action rather than 1 full round. (Creatures so summoned can only take a standard action in the round they are summoned.) Conjurers using this variant gain the normal benefits from enhancing a summon monster spell with the Quicken Spell feat.

A conjurer using this variant permanently gives up the ability to obtain a familiar.

https://www.d20srd.org/srd/variant/classes/specialistWizardVariants.htm#rapidSummoning


There's a rule for making custom spells in Practical Enchanter, a 3rd party book, that allows you to bump the duration by one step in the manner you describe, in exchange for 1 spell level.

with the normal spell research available that seems like an easy trade off