All tagged Monsters
You can never have enough undead wandering the halls of your dungeons.
To sum up, an orc tribe that was on the rocks prayed to Gruumsh. In return they received the Sanguine Grail: an artifact that allows the orcs to, painfully, extract powers and knowledge from their victims.
Converting a Skull Lord from prior editions
Making a few monsters with the D&D 5e rules