I actually like Jade Shield better than Spine Carapace for this deck, for two reasons. 1) You stop all Cell damage permanently, since it can't be exploded or stolen, and 2) creatureless decks fail miserably unless they use Fahrenheit. Pack six Aflas and you have a decent amount of creature control if he manages to get anything sizable out before the Cells take over. Rest is healing, and voila.