Blazing fast build

[LoneKnave]

Casteth Fire Trail on thyself.
Enter combat with thine poor foe.
Casteth bladed dash as a standard action to moveth thyself towards thine enemy and maketh a single attack with thine piercing weapon, leaving a trail of fire in thine wake.
Verily, thou should possesseth the feat Hamatula Strike, so that when thine piercing weapon strikes thou arth able to grappleth thine foe.
Once thine foe arth grappleth by thou, thou shalt use thine move action with Greater Grapple (that thou obviously possess) to move thyself and thine enemy back across thine trail of fire up to half thine movement speed+5-15 foot at the end. Thou deal 1d6+1dmg/caster level (10 max) for each 5 foot movement done in thine trail of fire.
And then, thou could follow up with a Rapid grapple to repeateth the process. Assuming thou art a medium creature with thy movement speed being 30, this could meaneth 12 times 1d6+1/level damage.

Knowing that how would thou increaseth thy movement speed?

Spoiler:

Sorry, I felt like being obnoxious. Long story short: combine fire trail with the "move" option of grapple. Use Greater Grapple, and then Rapid Grapple. Using this combo each 10 feet of regular movement turns into 1d6+1/level damage (more if you twink it out with the usual damage dealing shebangs)+a little (from the ability to position your opponent at the end of a grapple) every time you succeed on a grapple. So I'm looking for ways to boost my move speed to as high as possible and see how much damage I can do.

[Renegadeshepherd]

Travel domain, barbarian level 1, monk 3+, expeditious retreat spell are the easiest methods I know of at low levels.

[LoneKnave]

Monk and expeditious retreat don't stack as they are enhancement bonuses. I'd probably want to use Haste anyway. Barb and Cleric/Inquisitor for travel are good though.

[Renegadeshepherd]

Well I wouldn't stack more than 2 of these In any build though. Note: I'm pretty sure inquisitor gets expeditious retreat so you got the domain and the spell right there.

[Renegadeshepherd]

Darn it thought of something else...

Check eidilon evolutions and forms and see how much speed you can get out of one. If a lot then take synthesist summoner levels :)

[LoneKnave]

Right, Quad form starts out with 40 base land speed and every 2 legs (for 2 evo points) give 10 more (as ridiculous that'll look). The build actually sorta works with Fire Wall (on the summoner spell list) so that's also something.

[AndIMustMask]

there's the tribal markings (shiir-kah or something) feat that adds +5 to your base movement speed.

[avr]

With 3/4 BAB the +9 BAB for Rapid Grapple won't arrive until level 12, so this is at least a 13th level character if single-classed. Which means that your first problem will be succeeding at CMB checks on a regular basis when the enemy CMD is in the mid-30's. Synthesist Summoner is looking good for a nice large size bonus, as well as its odd BAB progression which means rapid grapple becomes available at 11th level.

It's far more efficient to increase an eidolon's climb or fly speed than its regular speed. One evolution point per 20' rather than two per 10' using extra legs. Flying around playing pinball with walls of fire may not have been your initial image, but it works for me.

[Artanthos]

The Fleet feat adds +5' movement and can be taken multiple times.

[LoneKnave]

Good point on the fly speed, although I'm not sure how grapple works while flying, and especially not sure how it interacts with the move option. Eidolons can also get Grab, which makes hamatula strike unneeded.

Hmm, wonder if I can get this going with a simple summoner instead of an eidolon/summoner combo. Would help the action economy out a lot. Summoner casts wall of flame, eidolon grapple/moves the mofo 3 times around. Rapid Grapple is only 4 feats so the eidolon can get it by 11 by itself.

[avr]

I can't think why grappling a creature while flying shouldn't work. Other than failing to move at all in a round requiring a Fly check to hover, of course.

True, synthesist isn't really necessary given a sufficently specialised eidolon.

I wonder if bashing grappled people into an Aquaeous Orb would work? Just in case the target is resistant to fire it'd be nice to have a backup plan.

[LoneKnave]

Well, there's Night of Blades, which deals comparable damage (in fact, at lvl 11-ish you have more average damage at 25 than fire walls 18) and is untyped.

If you have a high level wizard pal, you could move someone through an orb of the void like 40 times.