Added 4 minutes later
It definitely wouldn't suit the Orcs, as they don't worship Urgash, and the flag depicts him. The snake eating its own tail is a symbol of chaos. In the original game, it's essentially the same symbol; the author probably just improved it to their liking.
Блистает там воздушностью прогалин.
Но между кедров, полных тишиной,
Расщелина по склону ниспадала.
О, никогда под бледною луной
Так пышен не был тот уют лесной...