The Apathy

Horde {1}{b} (As an additional cost to cast this
spell, you may pay {1}{b} any number of times.
When this creature enters the battlefield create
that many tokens that are copies of it.)
When The Apathy attacks, creatures the
defending player controls get -1/-0 until end of
turn.
At the beginning of your end step destroy all creatures your opponent(s) control with less than
1 power.