Why was Slater here?
It was quite a coincidence.
After being hit by Carlos' third-circle spell that day, Slater was chased out of the Shadow Tower. After that, he relied on the Stone Tablet of Life to escape.
Slater had always been arrogant. The reason he lost to Carlos that day was because he was caught off guard. After he regained his senses, he began to look for Carlos to settle the score.
He definitely could not enter empty-handed. He had to prepare Wizard tools, potions, scrolls, and so on. Besides, it was not convenient to go out without some Magic Stones or resources.
But that day, Slater left the Shadow Tower in a hurry. He did not bring any Magic Stones or Wizard tools.
He was going to return to the Shadow Tower, but at this time, Cassandra and her people surrendered to the Allied Forces. According to the rules, if he returned now, he could not leave Shadow Tower again.
