A man who is part of the hero party and in that party there is a one male hero

a man who is part of the hero party and in that party there is a one male hero, a female healer and a female with spear for support. one day man got betrayed by hero, healer and a female with spear. it turned out hero wanted to remove man from his party but cant because of kings order so he planned to kill him. the healer was mans lover they planned to get married but it turned out she also betrayed him. for the sake of fame which hero promised her. Make a novel cover suitable for this story