Doomtide Wreckage

{t}: Add {b} to your mana pool and Doomtide
Wreckage deals 1 damage to you.
{2}{b}, {t}: Put the top two cards of your library
into your graveyard, then if a creature card was
put into your graveyard this turn, put a doom
counter on Doomtide Wreckage.
{x}{x}{b}, {t}, Remove X doom counters from
Doomtide Wreckage: Creatures get -X/-X until
end of turn.