Death's Draw

At beginning of each upkeep, draw three cards
then discard a card.
{b}{t}: Discard a card, then gain 1 life. Put a
time counter on this card.
{b}{b}{t}: Remove 3 time counters from this
card, then put a skull counter on this card.
Remove {x} skull counters, each opponent
loses {x} life. Shuffle your graveyard into your
library. Exile Death's Draw and End your turn