The Sihedron Circle (Kuthona (XII) 8th, 4712 AR)
The white dragon became invisible right before it entered combat. It flew low under the heroes (just above the standing stones) and used its breath weapon, at the same time relying on its frightful presence to weaken their morale. When the heroes scattered, he singled Gryxxa out in between rounds when it breathed and made a flyby tail slap followed by a bite so that it snatched her, carried her aloft, and breathed on her. The heroes are still fighting this battle.