When you begin casting this spell, you designate any number of creatures within close range. Those creatures gain knowledge of this spell, that you are casting it, and know how much longer they have. When the spell has been cast (after 10 rounds of casting), all targets you designated as you began casting this spell die and take 5d12 points of Force damage per caster level (maximum 75d12), unless they are on a different plane or managed to stop you (e.g. breaking concentration or killing you).