Im playing pokemon diamond and pearl, in that game there is a battle called elite four. After battling them, we can go to a place called mount coronet and we can catch dialga, palkia, giratina only for once. How about adding this to the game ? Hope u like it guys...! Its very interesting.

Some legendaries are obtainable through the games corner, such as Giratina. Dialga iirc was a promo and has been released, while palkia is not in game yet.

Plus, for many people, the Elite Four would be extremely easy and they would just use a masterball which is fairly cheap.

No amathyst..! Little more to tell, there would be a condition to beat the elite four. Their pokemons must be 20 times greater than ours highest one. And another thing. To catch palkia, there u have to fight against it. It is of the level 20 times of ours. Only pokeballs are allowed to catch them. If we catch, we will get a base palkia. Like we can catch so many legendaries in mount coronet...!