Murmillo: Shield Attack
* Instead of nullifying the shield's defense, Shield's physical defense is added to the Attack of [Scutum Hit] / [Shield Train] / [Butterfly] / [Frenzied Burst] by [Attribute level]*10%
* Calculated as a higher defense value between the first and second slot shield.
* When using the second slot, applied perfectly only when equipping 2 shields. Only half applied when equipping one
* (Ex: When the proportion of the Attack added is 10%, [Defense of first slot shield] * 5% + [Defense of second slot shield] * 5%)
Requirement : Character Lv 1 and above