Throne of Corruption

({p/c} can be paid with either {1} or 2 life.)
{p/c}: Untap Throne of Corruption. You lose 1 life.
{1}{p/c}, {t}: Discard a card.
{2}{p/c}, {t}: Add {b}{b}{b} to your mana pool.
{3}{p/c}, {t}: Put a -1/-1 counter on target creature.
{4}{p/c}, {t}: Draw a card.
{5}{p/c}, {t}: You gain 5 life.