Universe on Fire

All cards in your hand have Spectacle. Their spectacle cost is {x}{r} where X is half their
converted mana cost, rounded down.
When you cast a spell, if its spectacle cost is paid,
you may pay {r}. If you do, destroy target land an
opponent controls.
I wanna set the Universe on fire
Feel it burn tonight
Set the Universe on fire
There's no end in sight