David Jones had not prepared an "elite set" in advance, not because of confidence, but because he had set his sights on the Star-Condensing Elixir.
As a Class VI SSS tier elixir, the Star-Condensing Elixir not only could raise the user's Arcane Star rank by a full level for those who are below Class IV but also could forge a perfect Star Fire when the Trainer ignites it, reducing the difficulty for subsequent attempts of igniting the Star Fire and ensuring that the user does not face death.
In short, the stronger the talent, the more powerful the star fire would be.
In the history of the Flowery Kingdom, even if the probability of death while igniting the Star Fire is low, there have still been several elite prodigies who died under their own Star Fire Burning.
To avoid this situation, the annual Beastmaster Valedictorian reward at the Rosewood College is the Star-Condensing Elixir.