Ignite the Wilderness

Destroy up to 4 target lands. Then, exile the top
eight cards of your library. You may cast these
cards for as long as they remain exiled. You get
an emblem with "Whenever you cast a spell, add
{r}{r}{r}." Ignite the Wilderness deals 6 damage
to each creature, opponent and planeswalker.
Add {r}{r}{r}{r}{r}{r}{r}{r}.