Yeah don't ever open with a Medica II I was DPSing for a Nidhogg EX and a Whm decided to Divine Seal + Medica II on the pull when the tank literally went to pull, threw their Salted Earth down then boom healer has threat and after the pull went to the back near the start. By that time the boss had already turned around and cleaved us all with his breath, so yeah don't do that or you'll get burnt to a crisp xD.