The Wizard’s Challenge (Oxford 3000 Vocabulary Series)

In a world where magic was real, the great wizard Zephyr had hidden his most precious treasure deep within the green forest. To protect it, he had appointed a guard, a powerful creature with the strength of more than a group of a thousand warriors. But Zephyr knew that one day, a worthy guest would come to claim the treasure. He left a guide, a series of cryptic clues to lead the brave adventurer to the treasure. The journey was fraught with peril, as Zephyr had designed it to test the seeker’s courage and wit. Along the grass-covered path, a grave stood as a stark reminder of the many who had attempted to reach the end before and failed. In the treasure chamber, a vast expanse of grains of sand lay before them. There, they had to guess which single grain would grant them the key to unimaginable power. And, with that power, they would become the new grand master of the magical realm.