Ferrite Quarry

Ferrite Quarry enters the battlefield with a
charge counter on it.
{t}: Add {c} to your mana pool.
{x}{x}, {t}: Put X charge counters on Ferrite
Quarry.
{3}, {t}, Sacrifice Ferrite Quarry: Destroy each
nonland permanent with mana value equal to
the number of charge counters on Ferrite
Quarry.