Homebrew, Ravenloft: Denizens of Darkness (3.5e)
Miasma. The air around a ghoul lord is so heavy with the stench of decay that as one nears the ghoul lord, the miasma actually begins to resemble a sickly green mist. Any creature that starts its turn within 60 feet of the ghoul lord must succeed on a DC 12 Constitution saving throw or be poisoned until the start of its next turn. On a successful saving throw, the creature is immune to the ghoul lord's Miasma for 24 hours.
Turn Defiance. The ghoul lord & any ghouls or ghasts within 30' of it have advantage on saving throws against effects that turn undead.
Multiattack. When the ghoul lord takes the attack action, it can either make two greatsword attacks or two claw attacks.
Bite. Melee Weapon Attack: +7 to hit, 5' reach, one target. Hit: 13 (2d8 + 4) piercing attack. If the targeted creature is a humanoid, it must succeed on a DC 20 Constitution saving throw or be infected with the magical disease known as Ravenous Fever which has the following effects:
Claw. Weapon Melee Attack: +7 to hit, 5' reach, one target. Hit: 11 (2d6 + 4) slashing damage. The target must succeed on a DC 12 Constitution saving throw or be paralyzed for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. Constructs and undead creatures are immune to the affect.
Greatsword. Melee Weapon Attack: +7 to hit, 5' reach, one target. Hit: 11 (2d6 + 4) slashing damage, & the target's speed is reduced by 10' until the start of the ghoul lord's next turn.
Spawn Ghouls (Recharge 5-6). The ghoul lord can transform the recently deceased into ghouls. The corpse of any humanoid creature that the ghoul lord has killed or has died while infected with ravenous fever can be transformed into a ghoul. The ghoul spawned with this feature is under the control of the ghoul lord, sharing a telepathic link that allows it to recieve orders.
Parry. The ghoul lord adds 3 to its AC against one melee attack that would hit it. To do so, the ghoul lord must see the attacker & be wielding a melee weapon.
Swamp, Underdark, Urban