A stunning ultra-realistic 3D render of a yellow ninja and a blue ninja, embodying the elements of fire and ice, respectively. The yellow ninja exudes warmth and intensity with fiery details, while the blue ninja radiates a cool and calm aura with icy embellishments. Both characters are adorned with elements of gold and diamond, adding a touch of elegance and power. The scene is set against a dramatic backdrop that emphasizes their contrasting elements, creating a captivating blend of heat and frost, passion and tranquility, within an atmospheric ratio of 2:3.