"Originally published in 2020 by Hodder Children's Books in Great Britain"--Title page verso.
Summary
"Xar and Wish are on the final leg of their journey -- first stop: The Mine of Happiness. Here, starvation is never far away for the Magical creatures who toil in its horrible depths. Xar and Wish must escape and fast; Xar needs to take control of his ever-growing Witchstain, and Wish must achieve her Destiny. But the Tazzelwurm is in their way, a grotesque monster who threatens to block every entrance."-- Publisher's description.