OK cool I'll tell you what is going on and then I'll need your advice to make it more obvious.
So in the first frame he is sweating from the sun's heat. In the next frame, he sees what he thinks is the mystic who sent him on the adventure in the first place.
But in the next frame, to his surprise, it's just a mirage. And a cactus.
He keeps on moving, but decides to just lie down in the hot desert sun.