Dominarian Mech

This creature enters the battlefield with a +1/+1 counter on it if {w} or {b} was spent to cast it.
Morph {4} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
{t}: Add {3}. Activate this ability only if creatures you control have total power 7 or greater.