Khif-Esh, Vizier of Rhonas

As an additional cost to cast this spell, tap and
exert two creatures you control.
Whenever you cast a creature card, it enters the battlefield with a +1/+1 counter on it.
Exerted creatures you control can block as
though they weren't tapped.
"With the power of Rhonas, I call upon the creatures
of his Menagerie!"