Saul placed the pre-prepared Magic Materials onto the altar.
Strength cannot be generated out of thin air. This granting of Extraordinary Power to ordinary beings is essentially just a modification of ordinary beings; it is no different from adding an organ or merging a Bloodline in Biological Transformation.
And modifying beings naturally requires various materials.
It's worth mentioning that these materials are quite expensive, and besides this, a large amount of Magic Stones is needed to drive the altar.
Lynch calculated that completing one career ceremony consumes resources worth more than a hundred thousand Magic Stones. This is only to grant the lowest level of Extraordinary Power; the higher the power granted, the more resources are consumed, and the more expensive the Magic Stones are.
The fate of beings in this world is predestined at birth, just as slaves remain slaves, Nobles remain Nobles, mortals remain mortals, and Wizards remain Wizards.