The Wolf Teacher — J.R. Roberts

Clint is camped for the night when he is suddenly attacked by a grizzly bear. His horse, Duke, manages to scare the bear off, but Clint is seriously wounded and comes down with a fever...

When he comes to, Clint finds himself in the care of a shaman. Because of the black horse he rides, a group of Comanche Indians believes Clint is a legendary hero called the Dreamwalker. They nurse him back to health, because the Dreamwalker will need all of his power and wisdom to lead them to safety. Clint wants to repay these people who saved his life. But with the Army chasing the Comanches, to force them back to reservation life, a mere mortal like the Gunsmith might not be enough to stop the bloodshed...