Web of wind

"Here is a web to catch the wind And a loom to weave a lay. Riddles play on words, my friend—Play on these and play you may." This simple riddle was the clue that started the sword-for-hire Corson and her sorceress companion, the Lady Nyctasia, on a hunt for the greatest treasure ever hidden. But this long-abandoned treasure is the hoard of the dread Cymvelan Circle, whose scattered members are coming together again to claim what is theirs...