Vile Ranks

Orc spells cost {1} less to cast.
At the beginning of your end step, if a nontoken Orc entered the battlefield under your control, create a 1/1 red Orc creature token.
Horde - If you control five or more creatures, Orc creatures you control get +1/+0.
"Wave after wave descended from the slopes as the other armies looked on in horror."