Combining reflexive verbs or double Indirect object pronouns (IOP)

Combining reflexive verbs or double Indirect object pronouns (IOP)
 

I was watching Transformers when I saw "Se atreven a amenazarme?" I looked up both words and saw that atreverse was a reflexive verb for "to dare" and amenazar was a non-reflexive verb for "to threaten". I thought to myself, amenazar should be a reflexive verb because you must always threaten someone, even yourself but that's half my question. Now that these 2 words are put together, I was wondering if it was possible to move the 'me' from the end of amenazar and put it between Se and Atreven? I never dealt with 2 indirect object pronouns but I've heard it once in a reggaeton song but I was told that, that kind of music will only teach me bad Spanish.
So the new structure would be "Se me atreven a amenazar?"... Is that possible to structure it like that?
http://i.imgur.com/jbZDZg6.jpg

As I was talking about before, the reggaeton song uses "Se" and "Nos" next to each other as Darse is reflexive... is this correct?
Junto Al Amanecer por J. Alvarez
"Si se nos da la oportunidad
que nuestros cuerpos se vuelvan encontrar"
http://www.metrolyrics.com/junto-al-...j-alvarez.html

From the site Spanishdict, it says that volverse means "to become".. Should the "se" be moved to the end of encontrar?

Somewhere along the line, they never taught me combining multiple reflexives.

At a first glance both cases seem the same, but they aren't.

As you said "atreverse" is a pronominal verb. Therefore, you have to write: (ellos) se atreven.
"Amenazar" is a transitive verb, it needs a direct object ("me" in this case).

You cannot change the order because it's not periphrasis.

Sise nos da la oportunidad is correct.
That "se" is a "pasiva refleja" one and "nos", an indirect object. It literally means: If the opportunity is given to us.

@Roxerz: Not all "se" are reflexive. For some explanations on the uses of "se" you can take a look here.

wao muchas gracias a Ustedes. ya está más claro.