Relentless Legionnaire

Legion {1}{w}{w} (At the beginning of your upkeep, you may pay {1}{w}{w}. If you do, create
a token that's a copy of this creature.)
Relentless X (Whenever this creature attacks,
it gets +X/-X until end of turn, where X is the number of other creatures you control with the
same name as Relentless Legionnaire. )