The shamans adjusted on the twentieth day.
The two Seventh Circle shamans, whose atmospheric manipulation had been the barbarian army's primary magical capability since the lesser shamans' degradation at Harken Field, shifted their power from offensive application to a purpose that the Threian battlemages had not anticipated: anti-air defense.
The atmospheric manipulation that had been pressing the Threian center into the ground at Harken Field was redirected upward. The air above the barbarian battery positions thickened. Not the fog that the lesser shamans had produced at Vinefield Ridge. Something different. The air's density increased at the altitudes that the griffon dives required, the atmospheric compression creating the specific condition that the Seventh Circle's power produced when the power was applied to the medium that aerial mounts depended on for flight: reduced lift.
