Grave Golem

Grave Golems would be found in abandoned villages. They would be tougher than the Iron Golem. They would attack harmless mobs. They would be brought out their graves by placing a lightning rod on any block surrounding the grave.  You then, would have to wait for a lightning strike to bring the golem back to life.  If you choose to fight the Grave Golem, and destroy it, you would be rewarded with, a random enchantment book,  Sharpness V, Mending, Looting V, Unbreaking V, Efficiency V, or Fortune III.