On the sixth day of CRITmas my players got from me,
…Six umbers hulking.
There is rumoured to be a goblin city hidden deep in the mountains. Away from the dwarves and other tall folk who would do them harm.
Long ago, the ancestors learned how to train the great umber hulks to accept the city as part of their territory. Any who are unfortunate enough to actually find this city of great goblin power rarely lives to experience it, those who somehow survive never remember finding it.
Why wouldn’t a culture use what is there to their benefit? “So what if a few stupid enough to wander too close to a hulk nest goes missing. The overall benefits of safety outweigh culling the dumb.” – Croak the Thinker