Endless Mighty Swing / Strength Surge / Etc.

[Owen K. C. Stephens]

Check my RAW logic on this.

A 17th level barbarian is not fatigued after ending a rage. Beginning and ending rages are both free actions.

Round 1. Barbarian begin to rage. Uses mighty swing and strength surge rage powers.

Round 2. Barbarian ends rage from round 1 as free action. Barbarian begins new rage as free action. Barbarian is free to use rage powers again.

[Poison]

I don't see why not.

[Shadow_of_death]

You can do it earlier with five levels of oracle and the lame curse

[Cowjuicer]

I'd have no problem with it. Strength Surge is fine, and you'd still need to threaten before getting anything out of Mighty Swing.

[Shar Tahl]

prd wrote:

Free Actions

Free actions don't take any time at all, though there may be limits to the number of free actions you can perform in a turn. Free actions rarely incur attacks of opportunity. Some common free actions are described below.

The free action mechanic has built in features to limit things as a GM. As a level 17 character though, this level of power would not be unreasonable.

[Nordlander]

You could also do it as an 8th level Barbarian with one level of "lame" oracle. Perhaps select fire for the plus 10 move speed buff. Early goodness