If I create a Humanoid faction and choose Feyborn as one of my traits I gain access to a sphere of Influence of my Choice (For Example Earth) and can choose a Trait in this sphere. Am I allowed to then pick another trait from this Sphere of Influence or can I only do so via the trait 'Specialized Adaptive Mutation', which would increase my 'Fey Hybrid X' trait from 1 to 2?
E.g. I have given my faction the trait 'Feyborn', which gives me the ability 'Fey Hybrid 1'. I use this ability to gain access to the 'Earth' Sphere of Influence and gain 'Rare Earth Alloys (Armory) as part of the Feyborn-trait. Can I now choose the 'Stone Body' Trait from the 'Earth' Sphere of Influence or am I restricted to the traits of Humanoids for my remaining traits?