Fix living dead is the only issue. Give it an increased healing rate of 50-75% while under walking dead. Make your attacks steal health in large increments during this to be able to save yourself from the consequence. Make it esuna-able. There are so many ways they could just make it better. Only need 50% your max hp recovered to remove the status.... AGAIN, SO MANY WAYS THEY CAN JUST EASILY FIX IT. 2nd post is right, invulns ain't an issue, just living dead (and to a lesser extent, the split second between superbolide's invuln and the moment you drop to 1 hp).