Before they could attack, I slammed my hands together, vibrations shooting up my arm from the rings I wore on my middle fingers. The charm held in the special henbane and amaranth infused rings thickened the air, and I embraced the familiar tightening in my chest as the incantation flowed from my tongue and burst from my hands. In an instant, all four were on their knees, clutching at their throats as the oxygen left their lungs.