Once you get the use of the Blood Golem, send it into battle and cast Iron Maiden on the monsters attacking it. This will give you great amounts of health instantly. Blood Golem gives you, and it, health for all damage it deals, and Iron Maiden causes monster who attack to deal themselves 200% damage back. Since the Blood Golem considers the 200% damage to be from it, this gives you lots of health. It works very well since all the monsters kill themselves.