Rain of Meteors

Accelerate {2}{r}{r} (You may cast this spell as
though it had flash for its accelerate cost. If you do,
it becomes an instant.)
Rain of Meteors deals 3 damage to each creature
and each planeswalker.
Addendum — If you cast this spell during your
main phase, Rain of Meteors deals 4 damage to
each creature and each planeswalker you don't
control instead.