Tahiri, how helpful can you be when you are cursed and you have no idea at what rate this curse will cause you to deteriorate? Do you believe that you are the only one that can assist him because I can assure you you are not the only one capable. You are just the only one that will follow him blindly with no regard for your personal safety and an inability to critique his plans of action.
At one time he was better at planning and now he jumps into things, allowing his emotions to rule and affect his decision making. I should hope that you can see that is an unwise way to pursue this particular enemy?