This beyblade is built to have very, very high levels of defense, while still having far more than enough attack power to eliminate its weakness... stamina, so it's essentially a balance type. It can KO and OS stamina, attack, and defense (yes, you heard me... KO defense ). The only prominent weakness this combo has is that it has a significantly harder time KOing left-spin combinations. Left-spin combos with high LAD will win against this very consistently.

Wyvang has ridiculous attack power and defense based on the tests done so far... In its testing thread, Wyvang actually beat out Reviser on a defense setup. I don't know why people didn't pay more attention to it, but no one really tested it out for defensive purposes. From my experience, I think Wyvang should be put on the top-tier list for defense at some point. I hope these tests will show what I mean.

BD145 is just for the defense. Nothing more, nothing less. I was originally going to use W145 on this, but attackers beat it a little too easily for my taste.

RSF can provide heavy defense, while still being slightly aggressive... and when you put Wyvang on an even slightly aggressive combo, it will usually completely and utterly obliterate anything on a stamina setup. It also has a little extra stamina to help with RDF combos if it can't KO them.

The launch: Just bank... Sliding shot will work, bank shot will work, just bank. Against everything.

Note: In this video, I wasn't able to pull off as many KOs as usual... Flash will usually do better against Wyvang than it did in this video, and Wyvang will usually KO Reviser a little more.

Benchmarks:
Vs. Attack:
Vs. Defense:
Vs. Stamina:
Vs. Left-spin:
ShinobuXD's tests:

Wyvang/Reviser/Killerken Dragooon BD145/SA165RDF