Defcon 1

The caster will drop a nuclear bomb on a designated target within 5500 Km. The bomb kills all creatures with a challenge rating under 13 within a 3km radius of the bombs drop sight. Deals 100d6 to the surviving creatures and all creatures within 6km radius of the bomb sight, and all survivors of the blast and all creatures within 8km of the blast must make a DC 26 constitution role or take 50d6 Radiation Damage every turn until leaving the full 8km radius.