The true benefit of Chaos mode is truly fighting against the odds. You don't know if you can cast spells or summon monsters, do damage, and yet you have to fight against the tide. The spell cards you draw might not be what you want, and on top of that, you have to deal with the fact they might not all work. Though that certainly doesn't mean things are impossible. Improvise your way through the struggle, and you'll come out feeling more rewarded than possible in Law mode.