"Far as I know," said Henry with a shrug, "Jacob never really played with Void magic. A few summoning tricks and a bone golem is an easy thing to make," he nodded to one of the golems. "Also, it's largely just modeled after the training room at Voidbound, just a more temporary version."
"Earth golems come fairly naturally to me, it's just a matter of animating some dirt. And there's dirt everywhere. Also, from my understanding, you did most of your training in low-mana environments, which make for very slow progress and are more difficult to set up."