The taker's key

Sequel to The Dragon's tapestry and The Prism moon. Marvel's wizard's magic drains away, and she has difficulty casting even a simple spell to heal a garden. She must find the Key, the powerful talisman whose magic has become her only hope and whose symbol is woven into her tapestry. No one has ever seen the Key, though it is rumored to exist with the Taker in the deathlands. Here Marwen and Oldwives must travel to solve its mystery.