After Samiel looted the warehouses from the City of Torlen and obtained tonnes upon tonnes of resources, and stored them within the Dimensional Rings, he proceeded with the rest of his plans. Samiel quickly scouted the entire Industrial District of the Torlen, looking for anything that would sabotage his plans, like magical defenses around the district.
Yet fortunately for the attacker and unfortunately for the defenders, there were none, and the entire place was relatively unprotected. It was mind blogging that considering the purpose of the Torlen and all around that, one of the biggest industrial cities on the Human Continent, and the defenses around the city were on the level of a border village somewhere in a godforsaken desert.
After making sure that there were no magical defenses or any other types of countermeasures again attacks on the industrial district, which baffled Samiel to no end, he decided to look for a suitable spot where he could start casting.