Homebrew
Spellcasting. The bastion is a 9th-level spellcaster. Her spellcasting ability is Wisdom (spell save DC 16, +8 to hit with spell attacks). She has the following cleric spells prepared:
Toxic Touch. The bastion's skin is extremely poisonous to touch. Any creature that touches her skin, including when making unarmed strikes or attacking with natural weapons, must make a DC 14 Constitution saving throw. On a failure, the attacker takes 9 (2d8) poison damage and 1 point of exhaustion. On a success, the attacker only takes the poison damage.
Multiattack. The bastion makes two melee attacks.
Maul. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) bludgeoning damage.
Claws. Melee Weapon Attack: +7 to hit, reach 5', one target. Hit: 8 (2d4 + 3) slashing damage and the target must make a DC 14 Constitution saving throw. On a failure, the attacker takes 9 (2d8) poison damage and 1 point of exhaustion. On a success, the attacker only takes the poison damage.
Kiss of Death. Melee Weapon Attack: +5 to hit, reach 5', one willing creature, or a creature that is grappled by the aristocrat, incapacitated, or restrained. Hit: The target must make a DC 14 Constitution throw at disadvantage. On a failure, the attacker takes 9 (2d8) poison damage and 1 point of exhaustion. On a success, the attacker only takes the poison damage.
Guided Strike (Recharges after a Short or Long Rest). The bastion grants a +10 bonus to an attack roll made by herself or another creature within 30' of her. The priest can make this choice after the roll is made but before it hits or misses.