Carbon-neutral Darkness

After increasing pressure from the Haradrim to take a firm stance on climate
change, our Master has decided to move toward carbon-neutral darkness. 
Orcs or Black Númenóreans wishing to call upon Sauron's Darkness will first 
be required to purchase clean energy credits from an approved vendor. 
Each credit represents the energy gained from burning one year's worth of 
Oliphaunt droppings.