Quote Originally Posted by Formalhaut View Post
International variations aside, I used to call it Ar-see-us. Now I just stick to the official pronunciation. Not that I'm ever going to need to say it, given how impossible it is to obtain the pokemon.
If by "impossible" you mean "you just have to stop by your local GameStop before the 24th of this month", then you're right.

http://www.pokemon20.com/en-us/mythical.html#aug