Tam’s world has been bereft of magic for six hundred years, since the extinction of the Zorreni. These small animals, until they died out, were the foundation of all magic, working in bonded partnership with the great wizards of old.
Then Tam, while on a foraging trip, makes a wondrous discovery. The Zorreni are not extinct after all—he finds an injured one hiding in a cave. Unaware of the ramifications of his find, he christens the animal Sashi and takes him home to his village. There he discovers that many will kill to get their hands on such a creature, and that possession of a Zorreni is illegal under the king’s laws. By dawn, the Redguard is pounding on his door and he flees into the wilderness, taking Sashi with him.
your hook starts here:
With a bonded Zorreni, Tam is capable of performing great magic, but he has no idea how to use or control his power, and there is no one alive who can teach him. He must discover the ways of magic on his own, while evading the Redguard, who are combing the countryside for him. Meanwhile, in his dreams he is visited by the image of a white stone temple perched high on a mountainside. It calls to him with promises of knowledge and sanctuary. He must find it before the Redguard find him.
If people would kill to get their hands on this creature, I'd think more than the Red Guard would be after him. And the king sounds like the antagonist but we never see or hear about him.
And what kind of magic can he do?
You need to focus on specifics to make this compelling. I like the idea but the execution needs work.