Fixed dead-end loops, increased hero skills and removed stamstamine bonus
By the player report lack of solution field means, add 3 hero skills, start the round to get randomly. Skill 1: Gold-5, Man-5 - Destroy all enemy minions Skill 2: man-1 deals 5 damage to enemy heroes Skill 3: Gin-1 kills minions at random * Artefact card disappearance bug has not