Would any one be interested in another pokemon tournament?

[Skyblade]

actual question: How do you know what IV and ability the eggs have?

If it's a Pokemon I think needs a particular Ability to be effective, I'll check it when I hatch it, and get a new Egg if it has the wrong Ability.

For IVs, most of them should have at least 4 max, but I don't bother checking or breeding for those. Just an element of luck.

ah right

another thing is, how long it take to get a shiny Giratina?!

If you're trying to get one in-game, quite a while (hundreds, if not thousands, of soft resets). I think I have a couple of event shinies left somewhere, but I'll have to check.