Fire Storm

Charge {3}{r} (You may exile this card for its
charge cost, then cast it at any time for free from
exile.)
Kicker {r}{r} (You may pay an additional
{r}{r} as you cast this spell.)
Storm (When you cast this spell, copy it for each
spell cast before it this turn.)
Deal 3 damage to all creatures. If this spell
was kicked, also deal an additional 6 damage to all creatures.