Magic Missile Arcana

Evocation [Force]

Level: Sor/Wiz 9
Components: V, S
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Targets: two targets per three levels, no two of which can be more than 60 ft. apart
Duration: Instantaneous
Saving Throw: None
Spell Resistance: None

Large missiles of magical energy dart forth from your hands and strikes their target, dealing 1d4+1 points of force damage and potentially knocking the target back. If one or more missiles hit a target, it must make a single reflex save. For each missile striking a large target, the target is knocked back 10ft unless a reflex save is made in which case the target only moves back 5ft per missile. For each size category larger than large, the distance is decreased by 5ft per missile (ie a huge creature is moved 5ft per missile with a single save indicating no movement). For each size category smaller than large, the distance is increased by 5ft per missile. The direction of travel is along a straight line originating from the source of the missiles and directed away from the origin. Evasion and improved evasion apply to the kinetic effect but not the damage.

The missiles strike unerringly, even if the target is in melee combat or has less than total cover or total concealment. Specific parts of a creature can’t be singled out but unattended inanimate objects may be damaged by the spell.

For every three caster levels, you gain two missiles—twelve at 18th level, thirteen at 21st, etc to a maximum of tweny five missiles. If you shoot multiple missiles, you can have them strike a single target or several creatures. A single missile can strike only one target. You must designate targets before you  roll saves or roll damage.