Unstable Explosion

Reveal the top 6 cards of your library. Unstable
Explosion deals damage to target creature equal to
the number of land cards revealed this way. Put
all revealed cards on the bottom of your library in
a random order.
If a creature dealt damage by Unstable Explosion
would be sent to a graveyard this turn, cast a copy
of this spell. You may choose new targets for the
copy.