The Kilauea

{t}: Add {u}{g}{r} to your mana pool.
{x}{t}: Add {x} amount of mana to your mana pool,
in any color combination.
{10} Choose an opponent: destroy your chosen
opponent's creatures, enchantments, artifacts, and
planswalkers.
Your opponent gets {x} amounts of 2/2 plant
tokens, where {x} is the number of creatures, enchantments, artifacts, and planswalkers
you destroyed in this way.