Is there a feat or PrC that...

[RigaMortus2]

Allows you to either make an additional 5' step OR make a 10' step but treats it as a 5' step? I could have sworn I have seen this printed somewhere before. Maybe not a WotC or 3.5 book though...

 

[Crothian]

not that I've seen

 

[Camarath]

In the Expanded Psionics Handbook (and the SRD) the Elocater prestige class gain Capricious Step an ability that allows it to take a second 5ft in a round. Also in the Arms & Equiment Guide there was an item that let monks take 10ft 5ft steps. I think that may be one or two other things in WoTC books that grant the effect you are looking for but I do not remember where or what they are.

 

[Iku Rex]

Allows you to either make an additional 5' step OR make a 10' step but treats it as a 5' step? I could have sworn I have seen this printed somewhere before. Maybe not a WotC or 3.5 book though...

The Sidestep feat from the Miniatures Handbook lets you make a 5' step after a successful AoO (once/round).

I also seem to remember something about 10' steps in the Oriental Adventures book. [searching...] DC 40 tumble check to make 10' step.

 

[Sejs]

There's a monk-only magic item called Training Dummy of the Master (or something similar) that after using it for a while lets you move 10' as a 5' step thereafter. I believe it appeared in the Arms and Equipment Guide.

 

[Arkhandus]

In Sword & Fist for 3.0, the Master Samurai prestige class acquires Supreme Cleave early on, allowing him or her to take a free 5-foot step after each cleave/great cleave attack (or maybe it was just before each cleave attack).

 

[Three_Haligonians]

We have a winner!

There's a monk-only magic item called Training Dummy of the Master (or something similar) that after using it for a while lets you move 10' as a 5' step thereafter. I believe it appeared in the Arms and Equipment Guide.

It is called the Sparring Dummy of the Master and it is indeed in the A&EG. It works like a manual or tome of stat enhancing (in that you have to use it over a period of time).

and indeed, the character must have one level in monk to use it.


J from Three Haligonians

 

[Drowbane]

In the Expanded Psionics Handbook (and the SRD) the Elocater prestige class gain Capricious Step an ability that allows it to take a second 5ft in a round. Also in the Arms & Equiment Guide there was an item that let monks take 10ft 5ft steps. I think that may be one or two other things in WoTC books that grant the effect you are looking for but I do not remember where or what they are.

Monk Elocators are fun... "I'll take a 10ft step, full attack... then take another 10ft back..."

 

[Joker]

DC 40 Tumble check from OA allows you to make a 10ft step as if it was a 5ft step.

 

[Storyteller01]

The Imperial Legionnaire for Dragon Star (3.0 OGL source). 10th level ability allows you to take a 5 ft step before and after a full attack action.