Time Paradox

The chosen creature type(s) for this card are:
artifact, angel, avatar, demon, devil, elemental,
god, kraken, nightmare, specter, spirit, vampire,
weird &/or zombie.
Whenever a creature attacks time paradox adds
two -1/-1 counters to it, unless it is at least one of
the chosen creature type(s).
"All mortals are slaves to time.
To master time, is to be able to kill any mortal being."