Billion Year Storm

This spell can't be countered
Hexproof, Indestructible
Whenever you cast a spell, copy it {x} times.
If a legendary permanent is copied this way,
it is not legendary.
It goes on and on and on and on and on and
on and on and on and on and on and on and on
and on and on and on and on and on and on and
on and on...