The Olympic Festival of Shaman rituals was indeed conceived from the mutual trials of rituals, a competition born as such. Each opening ceremony over the years was traditionally marked by the performances of animal trainers, with King Grecke Sal's impassioned speech igniting the zeal of all Beamon, while the High Priest in red, Brut, took that fiery emotion of all Beamon straight to the clouds.
For a War Shaman in white robes to challenge a chief priest in golden robes using solid, forceful Divine Song was almost akin to a human intermediate mage challenging a Magic Tutor—an absolute leapfrog, and this frog was one of Nedved's Thousand-Mile Horse-type giant frogs!
The ordinary Beamon spectators in the stands, "blindly watching the play and laughing with others," could not appreciate the gravitas of the situation, but those with a bit of understanding all tensed up internally.