Ed spent the next couple of hours gathering more and more skeletons. The main reason why it took hours was the command sub-skill didn't work unless the consciousnesses entered the system.
Ed didn't find this to be too farfetched. The efficacy of the sub-skills in controlling others had already been proven. If it did things remotely chances were it would turn into another transmission skill.
Which speaking of, Ed used it communicate with Iron quite often.
'Resist my command' He had been transmitting this message and others like it quite a lot. He even tried to create weird paradoxes by given contradictory orders and in the end, he found it to be impossible.
'Commands don't stack' It was logical since otherwise simple commands like stay in place would mean locking the entity in place for the rest of their life. For the latest command to replace the previous regardless of content was therefore not unexpected.