[Buying]  Buying Dark Dragoon and MF Lightning L Drago 100LRF

Hello fellow bladers. I am new to the site so hello again. I am looking for Dark Dragoon Beyblade. I love how the blade looks and it is one of my wishlist of blades to have. Also what is a MF Lightning L Drago 100LRF is that a powerful L Drago if so where can I buy one as well.
Ebay has pretty much every common blade. No it's not a powerful blade. Also you'd need to buy more than one blade to make that since Lightning L Drago has a different bottom.
Okay sounds great to me. Using Lightning L Drago which parts should I replace to make him stronger? Also Dark Dragoon is not a common blade, so it is much harder to find. Do you know a website for hard to find blades?