The “Iron Throne” scenario.

However, it's not that simple. Everything was going very well until level 16, when, instead of the skill needed for the Castle of Alchemists, I had to take Magic of Light, although it wasn't entirely useless. But naturally, this skill line started to fill up, and then, after taking the quest castle and reaching level 25, the choice was only between Reflection or Secrets of Chaos. I specifically replayed this moment 10 times: only these 2 skills were offered, which block the path to the Castle of Alchemists.