This is a variation of the Meteor Swarm spell.

Innate Attack (Crushing, Projectile) 5dx4 [235] 
    Delay (Fixed, 2 seconds) [+0%] 
        Anyone looking up might see the approaching meteors 
    Explosion 3 [+150%] 
    Incendiary [+10%] 
    Overhead [+30%] 
    Environmental (Outdoors) [-20%] 
    Nuisance Effect [-5%] 
        Meteors can be seen before they strike 
        This requires looking up; there is no sound until they strike 
    Magical [-10%] 
    Spell Components [-20%] 
        Must say "meteor" in Latin 
        Must gesture with hands 
Level 2 [285] 
    Add Multiple Targets 1 [+40%] 
Level 3+ [+50/level] 
    Increase Multiple Targets by 1 level [+50%]