I'm just interested in theorycrafting. The barbarian class provides two mechanisms of growing a character's size one step:
- Titan Mauler's Titanic Rage
- the bloodrage power: Abyssal Rage
There are also additional sources of increasing one's size. Using the eldritch heritage feat line, one can pick the sorcerer bloodline ORC and thus gain Power of Giants.
Of course, the friendly mage cast or one, via items, can employ Enlarge Person to help a bit.
Which of these options stack and what size category will be gained?