KOPS/YP/DD/Super charge the sword with lightning spells before trying to hit the gargoyle with stabs and slashes

From Create Your Own Story

You say several words that mean lightning in several languages while holding your dad's sword in 2 hands, essentially enchanting it. You then charge the gargoyle with dad's blade, putting all your energy into 1 stab that, mostly due to the hardness and sharpness of the sword, pierces the gargoyle's skin and powerfully electrocuting him. You might have used too much, because the gargoyle then explodes.