This sentence will automatically tell you that it is written in English Language.
I supposed to use it as an example in my answer, but after much considerations, I became confused.
I eliminated will because it is a modal verb. I also eliminated tell because I thought that it was not referring to this sentence which is the subject and proclaimed written as the main verb.
But then, I also thought that tell should also be able to be a main verb since it tells that it is written in English language. In other word, tells will have the biggest effect.