"DUEL TO KILL, POTTER!" Draco called out, trying to do transfiguration on the fly and change the battleground into a series of spiked pit traps. As he got the ground to open up and drop goblins towards spikes to impale them, his shield charm failed and a hot knife-like sensation washed over him as doubled over. His robes were sliced open as he saw his own innards strewn upon the ground haphazardly.