Cube of Inverted Reality

If one or more +1+1 counters would be put on a permanent, that many -1-1 counters are put on that permanent instead.
If a player would draw one or more cards, except for their normal draw step, that player discards that many cards instead.
{b},{t}: Put a +1+1 counter on target creature.
{b},{t}: Target player draws a card and loses 1 life.