While Head Commander Bodley had a headache checking the price of his knight's big sword, Abel took out the orc priest spell book from the seclusion circle. By this point, he had already remembered all the content, but he still preferred the feeling of holding a paper copy.
After spending (wasting) many soul potions on figuring out the original recipe, he decided to skip the part where the "resurrection of skeleton" spell. Instead, he decided to go straight to the "command skeletons" part.
According to what was written, the orc priests had to learn this ever since they began their apprenticeship because of its difficulty to master it. Whoever this book belonged to, he had annotations and notes written all over it. Abel was a smart man, but he figured that these writings would be very instructive for him.