Extended Cleric Levels (21-40)

Demigod
At 21st level, you begin to surpass the capabilities of regular mortals as you slowly become godlike, emulating the things that make you a cleric and transforming you into a minor deity in your own right. You’re creature type changes from humanoid to celestial, but you keep your subtype (i.e human or dragonborn). In addition, features and effects that normally can’t increase your ability scores above 20 can now increase your ability scores to a maximum of 24 instead.

From this point on, your physical features slowly change as you gain levels in this class. For example, your eyes might glow white whenever you cast a spell, your skin might take on a permanent glow, or your hair might take on a permanent float effect. These changes are slow, but by the time you have reached 40th level, you should exemplify several different physical manifestations of your power. Work with your DM to determine what these are and when they start showing up. Finally, you cannot gain levels in any other class.

Additionally, as you gain levels and overcome great challenges, the DM will grant you other features and traits at their discretion in relation to your celestialness, particularly one or more epic boons. Your AC and all saving throws also increase by 1.

Improved Ability Score Improvement
When you reach 23rd level, and again at 28th and 34th level, you can increase one ability score of your choice by 3, or you can increase one ability score of your choice by 2 and another ability score of your choice by 1, or you can increase three ability scores of your choice by 1. As normal, you can’t increase an ability score above 24 with this feature.

Winged Acolyte
At 24th level, you begin to feel an itching sensation in your shoulder blades. The itching gets more and more intense over the course of three days until the eve of the fourth when a pair of giant wings sprout from your shoulder blades that continue to grow over time. The DM will determine what they look like based on your domain and the specific higher powers you serve.

You gain a wingspan of 15 feet and a flying speed of 90 feet. This increases to a wingspan of 20 feet and a fly speed of 120 feet at 30th level, and to a span of 25 feet and a fly speed of 150 feet at 36th level.

Spreading Faith
Starting at 25th level, your presence is enough to get people to follow your faith without any effort on your part. Stories of your deeds, whether for good or ill, slowly become distorted legends and the people will look at you with awe or fear. The exact effects of this are up to the DM to determine, as the nature of your being and the deeds you have commited can vary greatly. The information and the stories about you that are readily available may fluctuate from place to place. Villages and small towns are more susceptible to this effect than larger towns and cities.

Divine Assistance
Beginning at 31st level, you can use your Divine Intervention feature once every single day, regardless of whether your god has already intervened within the past week. If your god already has come to your aid within that time, though, you will instead receive assistance from one of your angelic “siblings”: a deva. This deva will aid you and your allies in any way it can for up to an hour, but will only assist with one task before going back to the plane from whence it came. This task could be helping rebuild a city, aiding you in combat, gathering information, etc. You can call for aid in this way so long as the deva remains in good standing with you and is still alive. No matter how powerful you are, your deity will not send an endless supply of disposable angels to aid you, so if multiple devas you summon in this way die your deity may refuse to send another until you regain their trust.

Angelic Form
At 32nd level, you gain the ability to temporarily manifest your celestial power into the form of a true angel. As an action, you can cast shapechange on yourself without expending a spell slot and without using any material, somatic, or verbal components, transforming into a planetar. The spell is not concentration for you, and you cannot change into other creatures using this casting of the spell. When you revert back to your regular form, you immediately gain two levels of exhaustion. You cannot use this feature while you have any levels of exhaustion.

Celestial Essence
Beginning at 35th level, your existence is a bane to the unholy. You shed bright light out to a radius of 5 feet and dim light for another 5 feet, and any fiend or undead that begins its turn within the bright light takes 20 radiant damage and is blinded until the end of its turn. Any fiend or undead that ends its turn in the bright light takes the damage and is blinded until the start of its next turn. Creatures in the dim light only take 10 damage and aren’t blinded. At the start of each of your turns, you can choose to turn the light on or off. If you follow an evil god, you may choose to give the light a red or purple tint and have it deal necrotic damage instead, and only effect celestials and fey instead of fiends and undead.

Divine Power
At 37th level, your connection to the base forces of life and even your own divinity increases exponentially, granting you divine power to rival that of other angels. Your Constitution and Wisdom scores each increase by 2, to a maximum of 26, as well as one other score of your choice; each of your weapon attacks deal extra radiant damage equal to your Wisdom modifier; and you can use your bonus action on your turn to regain one use of your Channel Divinity, after which you must complete a short rest before being able to do so again.

Healer of the Gods
At 40th level, your transformation from mortal to god is complete. Your DM will grant you one boon from the list of Epic Boons in the Dungeon Master’s Guide after taking suggestions from you. In addition, whenever you cause a creature to regain hit points, that creature gains temporary hit points equal to the maximum number of hit dice it can have (up to a maximum of the number of hit points it regained). You also gain sufficient power to grant divine powers to one creature, beginning your ascent to true godhood.