I'd say Powerful Build refers to your Goliath base size, not the one you could have by other means (e.g. Large Form, Enlarge/Reduce or a Magic Item)
See next reply. It's true the wording allows the interaction, so Powerful Build would be affected by changes to your size from other sources (e.g. Large Form, Enlarge/Reduce, a Magic Item, etc.)
I would think they would stack. Powerful build says you “count as one size larger” not, “you count as a large creature.” So for those 10 minutes when you are large, you would have the carrying capacity of a huge creature. I’d also let it stack with other similar powers, rune knight, giants barbarian, or whatever else.
It would allow for a pretty cool out of combat use to hulk out to large size and now you can move the boulder out of the way. Gives the power more interesting flexibility.
When my goliath uses large form to increase their size does powerful build change with that so that I now count as huge for carrying checks etc.
It's an interesting question.
I'd say Powerful Build refers to your Goliath base size, not the one you could have by other means (e.g. Large Form, Enlarge/Reduce or a Magic Item)See next reply. It's true the wording allows the interaction, so Powerful Build would be affected by changes to your size from other sources (e.g. Large Form, Enlarge/Reduce, a Magic Item, etc.)
I would think they would stack. Powerful build says you “count as one size larger” not, “you count as a large creature.” So for those 10 minutes when you are large, you would have the carrying capacity of a huge creature. I’d also let it stack with other similar powers, rune knight, giants barbarian, or whatever else.
It would allow for a pretty cool out of combat use to hulk out to large size and now you can move the boulder out of the way. Gives the power more interesting flexibility.
I stand corrected. I've updated my reply.