Nidorina

You may sacrifice a creature named Nidoran(F)
rather than pay this spells mana cost.
Nidorina can't have -1/-1 counters placed on it.
Wither(This deals damage to creatures in the form
of -1/-1 counters.)
Nidorina gets +1/+1 for each other Rhino Beast
creature you control.
{t}: Put a -1/-1 counter on target nonartifact
creature that is not both black and green and is
attacking or blocking this turn.