Prompt:

Epic anime artwork of a wizard atop a mountain at night casting a cosmic spell into the dark sky that says "musesai" made out of colorful energy --ar 3:4

夜晚，一位巫师在山顶上施展魔法，他向黑暗的天空 cast出一个由五彩斑斓的能量组成的咒语，上面写着“musesai”。