Specifically Frost Beam activates more slowly than Ring Bind and is easier to escape.So what exactly are these great things we can do with Ring Bind, that we can't do just as good with Frost Beam? Because it seems to me like if we want to bind someone in place, encasing them in an ice that won't give them frostbite should work fine...
Binds are Nanoha-verse mages 101. Freezing spells are not.
There's a reason for that