Body ArrayEx
Level 9
Claws of steel, legs of hardwood, polycarbonate torso—your nanites can reconfigure your cells individually into different materials, granting you access to a special fourth array option called a body array. When you form a body array, you gain your choice of one energy resistance equal to your Constitution modifier, chosen when you form the array. At 3rd level and every 4 levels thereafter, increase this resistance by 1.