Heheh. I'm saying you can have Turtwig and Piplup. I want you to beat the E4 so we can play Battle Frontier games and all that. So you can raise them into Torterra and Empoleon.
OK good luck battling Sunyshore's Volkner and have fun with your Giratina! BTW you should train a Luxio/Staravia and raise it into a Staraptor/Luxray. I've been suggesting that to people ever since I finished the game. If you don't, you'll have a tough time beating the E4. If you can't get Staravia/Luxio to a Staraptor/Luxray, I suggest toughening up your Pokemon a little bit more.
Hmm....OK here's a plan. Before ANY Legendary PKMN Battle, always remember to SAVE THE GAME!!!!! OK, once you encounter Giratina, immediately use a Quick Ball. If that doesn't work, have Mismagius in your lead and start out strong using Shadow Ball (I know you have that move). Giratina should counter by Using Shadow Force/Ancientpower/Dragon Claw. It should be in the Yello point at its Health Bar. After that, switch to Infernape and start chipping away at its HP using moves like Flame Wheel, Fire Blast, ThunderPunch, or FirePunch. If Giratina gets Infernape to the Red point in its health bar, switch to Altaria. Revive Infernape. Keep repeating that method until you run out of Revives or if Infernape is your last man standing. If Infernape is your last man standing, just immediately use the Master Ball but if you catch it with the Master Ball, you have no more Master Ball! You can always win another Master Ball using the Jubilife Lottery but that'll take awhile and TONS off luck. Hope I Helped!
Oh. Giratina is at Lv. 47. Did you capture a Starly/Staravia and train it into a Staraptor? Or trained a Shinx/Luxio and evolve it into Luxray? I'm guessing you'll have trouble beating Cyrus....
Heheh. You actually don't need a National Dex to move onto the Battle Frontier. BTW have you captured Giiratina yet? I have some tips if you give me the levels of your Pokemon.