Arthos's grin widened and he took a step backwards to ensure no unfortunate accidents could happen and began to draw on his power. The shadows of everything and everyone lengthened, stretching towards him independant of the light source that created them.
Water began to condense out of the air and swirled around his feet, frothing and whirling faster and faster, a maelstrom in miniature.
Winds began to blow, converging on Arthos and lifting him slightly into the air. His glowing began to intensify as the draw became increasingly difficult to maintain.
Rocks began to skitter around, drawn as if by gravity towards him.
Fire gathered in his palms, glaring whitehot.
Lightning began to strike around him from clouds that boiled up, and Arthos's glowing became nearly too intense to look at directly.
"These are the powers at my command."
"That's a shame. I was just starting to have fun." He let the power die down and the elements relaxed.