Temple of the Forgotten God

As an additional cost to cast Temple of the
Forgotten God, tap two untapped creatures you
control that share a creature subtype.
{t}: add {r} or {g}
{t}, {g}{g}{g}{g}{g}{g}: Draw X cards, where X is
equal to the number of creatures that share a
creature subtype with a creature tapped to cast
Temple of the Forgotten God you control.