This book can be downloaded and read in Apple Books on your Mac or iOS device.
Urza Triumphant The war between Urza and Mishra is over. Brooding on the death of his brother at the hands of extraplanar forces, Urza drifts among the planes. But the end of the Brothers’ War has transformed him into something greater. Deep within his heart, a spark has been kindled to a flame that cannot be quenched. Urza has become a planeswalker.
I enjoyed reading this story but unfortunately the book had many minor typos like it had been scanned and the software didn’t quite read some of the letters correctly! Would be worth an edit if any editors have the time.