The wolver blade line would be a medium speed (three swing) sword that deals peircing and normal damage.
The blade side of the sword would be spiked, as the star rating goes up the spikes will apear more and more like wolver teath.
The charge attack will be a wide slash infront of the knight, covering slightly more than the 180 degree front arch. The damage wile better than a normal swing is to be fairly unimpresive for a charge attack. The reason for this is that in adition to the swing and damage the charge attack also causes a ghostly wolver to howl, providing an attack up bonus to all nearby freindly knights in the same fashion as an alpha wolver (though to a lesser degree, equivlent to a low damage bonus, maybe up to a medium bonus by 5*). This attack bonus will operate similar to the curse status, in that it will only effect certain weapons namely the ones the knights are holding when the buff was applied, and they will be marked with a symbol so you will know remember they are effected, in this case a red outline. This does mean that the wolver blade can only buff itself for the user, but can buff any weapon for teammates.
A knight can only be under one such buff at a time so a second attack up buff will override the previous. Though it is up to OOO, i would expect that the attack up will follow standard stacking buffs, so that all damage bonuses including the attack up will still top out at 6 (maximum!).
Names
2* Wolver Blade
3* Dusker Blade
4* Alpha Blade
5* Akela
alpha or ash ashtail maybe
2*wolver
3*dusker
4*ash tail
5*alpha