Theurgy - Arcana Domain

A number of deities claim arcane magic as their domain, for magic is as much a part of the fabric of the cosmos as wind, fire, lightning, and all other primal forces. Just as there are deities of the sea and gods of warfare, the arcane arts feature their own divine patrons. Such deities often have clerics, but many gods of magic bid their followers to take up the study of wizardry. These religious magic-users follow the arcane tradition of Theurgy, and are commonly known as theurgists. Such spellcasters are as dedicated and scholarly as any other wizard, but they blend their arcane study with religious devotion.

Divine Inspiration

When you choose this tradition at 2nd level, choose a domain from your chosen deity’s list of eligible domains (see appendix B, “Gods of the Multiverse,” in the Player’s Handbook for examples). The Knowledge and Light domains are especially appropriate choices for a theurgist.

Arcana Domain

Magic is an energy that suffuses the multiverse and that fuels both destruction and creation. Gods of the Arcana domain know the secrets and potential of magic intimately. For some of these gods, magical knowledge is a great responsibility that comes with a special understanding of the nature of reality. Other gods of Arcana see magic as pure power, to be used as its wielder sees fit.

Channel Arcana

At 2nd level, you gain the ability to channel arcane energy directly from your deity, using that energy to fuel magical effects. You start with two such effects: Divine Arcana and the Channel Divinity option granted at 2nd level by your chosen domain. You employ that Channel Divinity option by using your Channel Arcana ability.

When you use your Channel Arcana, you choose which effect to create. You must then finish a short or long rest to use your Channel Arcana again.

Some Channel Arcana effects require saving throws. When you use such an effect, the save DC equals your wizard spell save DC.

Beginning at 6th level, you can use your Channel Arcana twice between rests, and beginning at 18th level, you can use it three times between rests. When you finish a short or long rest, you regain your expended uses.

If you gain additional Channel Divinity options from your domain, you can employ them by using your Channel Arcana feature.

Arcane Initiate

Beginning when you select this tradition at 2nd level, whenever you gain a wizard level, you can replace one of the wizard spells you add to your spellbook with a cleric domain spell for your chosen domain. The spell must be of a level for which you have spell slots.

If you add all of your domain spells of the levels for which you have spell slots to your spellbook, you can add any spell from the cleric spell list instead. You may also copy cleric spells from spell scrolls into your spellbook as you would wizard spells. These spells must still be of a level for which you have spell slots. You treat them as wizard spells when you cast them. Other wizards will not be able to copy these spells into their spellbooks unless they also have this feature. 

Additionally, you can use a holy symbol (found in chapter 5 of the Player’s Handbook) as a spellcasting focus for your wizard spells

Lastly, you gain proficiency in the Religion skill.

Channel Arcana: Arcane Abjuration

Starting at 2nd level, you can use your Channel Divinity to abjure otherworldly creatures.

As an action, you present your holy symbol, and one celestial, elemental, fey, or fiend of your choice that is within 30 feet of you must make a Wisdom saving throw, provided that the creature can see or hear you. If the creature fails its saving throw, it is turned for 1 minute or until it takes any damage.

A turned creature must spend its turns trying to move as far away from you as it can, and it can’t willingly end its move in a space within 30 feet of you. It also can’t take reactions. For its action, it can only use the Dash action or try to escape from an effect that prevents it from moving. If there’s nowhere to move, the creature can use the Dodge action.

After you reach 5th level, when a creature fails its saving throw against your Arcane Abjuration feature, the creature is banished for 1 minute (as in the banishment spell, no concentration required) if it isn’t on its plane of origin and its challenge rating is at or below a certain threshold, as shown on the Arcane Banishment table.

Arcane Banishment

CLERIC LEVEL	BANISHES CREATURES OF CR …
5th	1/2 or lower
8th	1 or lower
11th	2 or lower
14th	3 or lower
17th	4 or lower

Channel Arcana: Divine Arcana

As a bonus action, you speak a prayer to control the flow of magic around you. The next spell you cast gains a +2 bonus to any attack roll you make for it or to its saving throw DC, as appropriate.

Arcane Acolyte

Arcane/Divine Initiate

When you choose this domain at 1st level, you gain proficiency in the Arcana skill, and you gain two cantrips of your choice from the wizard spell list. For you, these cantrips count as cleric cantrips. (Reverse wizard and cleric if you acquire this feature from a wizard subclass.)

Arcane Priest: Spell Breaker

At 10th level, you gain your chosen domain’s 6th-level benefits. Your faith and your understanding of magic allow you to delve into your god’s secrets.

Spell Breaker

Starting at 6th (10th) level, when you restore hit points to an ally with a spell of 1st level or higher, you can also end one spell of your choice on that creature. The level of the spell you end must be equal to or lower than the level of the spell slot you use to cast the healing spell.

Arcane High Priest

At 14th level, you gain your chosen domain’s 17th-level benefits. Your academic nature and understanding of magic and doctrine allow you to master this ability sooner than a cleric of your domain.

Arcane/Divine Mastery

At 17th level, you choose four spells from the cleric spell list, one from each of the following levels: 6th, 7th, 8th, and 9th. You add them to your spellbook. (You may still only prepare and cast spells of levels for which you have spell slots) You treat them as wizard spells when you cast them. Other wizards will not be able to copy these spells into their spellbooks unless they also have this feature.