The Legend of Gwyn ap Nudd
And then Morgwyn saw her Mother was holding up a large crystal ball in her left hand and within it, she could see a series of small ships coming directly towards them. They were being rowed by hundreds of men flying the Tuatha de Danann flags, and incredibly she could hear Gwylym.
Ref: DDD A Sense of Alarm
Artist Morgan Wyche,GwynfydThinking