Did Luffy pass out because of a poison or that last guys aura?

either or

I think he passed out because of a sleeping gas or paralyzing or something alike those should still work on Luffy, hes only immune to most poisons. The guy that appeared i think he has something to do with Law's crew absence or why Law is at that place.

I guess he passed out because of Caesar Clown......
It looks like CC and the mysterious guy are together and it was planned to betray Law.

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CC's face when he saw Luffy after the explosion HAHAHAHA epic!

Has there ever been a fruit user which if "powered up" could cause pain?

2 weeks! aaah...

Yea I think it was sleeping gas too, Clown prolly got the idea that it would work since Luffy said that poisons don't work on him because of Magellan.

Maybe that guy who got Law was Vegapunk. I can't wait to find out who...

i think his shooes and the way he seems to be dressed remindes me of the admiral (aoki i think his name was the one with the ice who quit after he has lost on that very island)

I know!! lol.

I'm sure it was the poison that kicked in.

But damn, Law's part has gotten so interesting. I have four guesses as to who it is:

Eustass Kid
Aokiji
Bepo (for the comedy of it)
[New DF User]

As for why he's hurting. I'm not sure if it's due to Haki, but as far as I know Haki doesn't work that way. I doubt it's a devil fruit, but that's all I can guess it is.