Devout

Bonus Proficiency

At 3rd level, you gain proficiency in the Religion skill. If you already have this proficiency, you instead gain proficiency in another skill of your choice.

Zealot’s Devotion

Also at 3rd level, you can devote yourself to a cause. As a bonus action, you can devote yourself towards either defender of kin or slayer of foes. Both choices use your zealotry die, a d6, as part of their effects, and your choice lasts until you choose a different one or are incapacitated:

• Defender of Kin. You devote yourself towards defending your allies. While this feature lasts, you can use your bonus action to rally a creature other than you that is within 5 feet of you. You roll your zealotry die, and the targeted creature gains temporary hit points equal to the number rolled. These temporary hit points last until the start of your next turn.
• Slayer of Foes. You devote yourself towards slaying your enemies. If you hit a creature with an attack while this feature lasts, you can use your bonus action to empower that attack. You roll your zealotry die, and add it to the attack’s damage roll.

Scholar of Evil and Good

The creatures of evil and good—aberrations, celestials, elementals, fey, fiends, and undead—are intricately connected with the dealings of the gods. By 7th level, you have learned much about these creatures, granting you advantage on any Charisma checks you make while interacting with them, and allowing you to add your proficiency bonus to any Wisdom, Charisma, or Intelligence save imposed by one of these creatures if you don’t add your proficiency to that save already.

Improved Zealotry

At 10th level, your zealotry die becomes a d8, and you can reroll it if you roll a 1 or 2. At 18th level, it becomes a d12, and you can reroll on a 1, 2, or 3. You must take the new rolls.

Endless Fervor

Starting at 15th level, your Action Surge gives you an additional bonus action on top of its normal effects.
Also, your Zealot’s Devotion feature is improved. You gain a +1 bonus to your AC while defender of kin is active, and a 15-foot bonus to your speed while slayer of foes is active.

Deus Ex Machina

By 18th level, the gods have noticed your ceaseless devotion, and have taken interest in your fate. You have advantage on death saving throws, and you roll a d6 every time you finish a long rest. A roll of 6 means that your deity visited you in your dreams and truthfully answered one yes or no question of your choice.