Level: 7
Range: 50 yds
Duration:  Instantaneous
Components: V, S, M
Casting Time: 7 segments
Saving Throw: Special
Area of Effect: 30' radius globe

When the spell is cast, a red
crystal sphere immediately appears before the caster, then
flies away at great speed toward an area targeted. A splitsecond
later, a blue crystal sphere appears and quickly follows
behind the red sphere. When the red sphere reaches
the area chosen by the caster, it explodes in a fireball 30
feet in radius, inflicting 4d4 points of fire damage to all
within the area of effect. A successful saving throw will
reduce the damage by one-half. A split-second later, the
blue sphere explodes in the same area of effect, causing 4d4
points of cold damage to all within a 30 foot radius. Those
who made the save versus fire will also take only one-half
damage from the cold blast, but those who failed the save
take full damage from the cold. The greatest effect of the
one-two attack combination is the tremendous shock
inflicted on inanimate objects by the radical change in temperature.
All items in the area of effect must save as nonmagical
items. Failing this save will probably cause the
materials to crack or shatter.

MC: A pinch of phosphorus and a small quartz crystal.