I don't know if there are any hidden mechanics that haven't been revealed yet, but this skill seems very dangerous. Like, what happens if he's attacked while in auto mode? This time he pulled out a mandragora just as he was attacked by the big lizard, which disabled it, and he happened to be immune to the mandragora scream since he was unconscious, but all of that was just extremely lucky. If he had been looking for some other type of herb, or if the lizard had attacked him either earlier or later, he'd have been dead, right?