To choose the best spell structure at once, of course, would require more Crystal Coins. Plus, Du You's selection involves the most challenging Transformation Trial, which demands even more.
The larger the expenditure, the more substantial the benefits in the end. Others in the transformation process wouldn't consume as much as Du You does.
Most importantly, being a Spellcaster is a costly profession, further intensifying the consumption of Crystal Coins. As a level 1 Awakener, only he could bear such enormous expenses.
The gains from Du You's first world travel were immense; otherwise, he wouldn't be able to afford it.
As the Crystal Coins continuously burned, the patterns in front of Du You's eyes began to transform in his mind, continually constructing an austere Rune which slowly became more robust, refined, and eventually extraordinarily complete.
