Brown Dust

{t}: Add {b} or {g} to your mana pool.
{1}{b}{g}, {t}, Sacrifice Brown Dust: Choose one.
-Exile all creature or land cards from target graveyard.
-Target non-basic land loses all card types and abilities and gains "{t}: Add {c} to your mana pool.
-Destroy target non-land permanent with a converted mana cost of 2 or less.
-Target creature gets -3/-3 until end of turn.
"Unprotected handling causes minor burns. Often foolishly used as food spice in Vacuo."