That strange pyromancer must have put great stock into his staff, believing that it could yield the swing of Overlord's blade. And for a scarce moment, it seemed that it would prove to be an obstacle , though that moment's hopefulness was soon dashed by the collision of the near-indestructible staff with the completely indestructible sword. As any one with a brain can imagine, the staff gave way under the might of the sword. Splintering it and making way for Overlord's infernal might to strike upon its weilder. 

Once the sword broke through the staff, there would be very few moments for the fire mage to defend himself against the assault. The still burning blade slammed into Steve's midriff at full force,rending his flesh asunder and splintering his lowermost rib. That would be the least of his concerns, however, as the sword continued cleaving through his body. It hacked through his stomach and through every organ in its way, striking into his spinal column and burning the wound closed. His spine split apart, and so did the rest of his body, letting his lower half drop away. 

Overlord released the blade with his right hand just before it went all the way through his foe's body, keeping his left hand on the handle. Just before the sword finished its journey, he grasped Steve's throat with his hand and lifted upwards. Hoisting his unavoidably dead foe's torso into the air, and staring straight at him. "Alright, so I would assume that is two down? Electric fellow, you killed the other boy, right?" In a calm tone, as though he wasn't holding his dying foe in his hand. The flames from his sword extinguished shortly after it came to rest.

Just to be totally clear here, this is why I wrote it this way:
[quote=Derpestein]
If it failed, he'd be cut in half. 
[/quote]