YOU SAID:
I am the slayer of dragons you mortal
INTO JAPANESE
私はあなたが死ぬドラゴンの殺害者です
BACK INTO ENGLISH
I am the dragon murderer you die
INTO JAPANESE
私はあなたが死ぬドラゴン殺人者です
BACK INTO ENGLISH
I am a dragon killer you die
INTO JAPANESE
私はあなたが死ぬドラゴンキラーです
BACK INTO ENGLISH
I am a dragon killer you die
That didn't even make that much sense in English.