I lose!

[Alfonse]

The advantage of using Tiger Blade/Severing Wind is that it gives you wind FOFs 3 loops for a free Dragon Tempest. It's a pretty effective way to keep the enemy hitlocked. More over, there's time to use Center after Severing Wind and chain that into another Tiger Blade.

Void Tempest is the one which FoFs into Dragon Tempest, actually, but why Tiger Blade instead of something like Crescent Strike?

[Lokanas]

Using Void Tempest was a given. =p I know how it works. But yes, Tiger Blade has a ton of advantages over Crescent Strike. More hitstun, next to no recovery, it puts you into the air, it's easier to put the enemies into proper spacing for other setups, it has a better FOF change than Crescent Strike(Multi-hitting AOE that gives + frames on block? Hell yes), etc... Really, Crescent Strike is fine if you aren't trying to be super-technical and fancy like me.