D&D's Arcana Unleashed adds eight arcane subclasses

Dungeons & Dragons has opened the door to a world where magic is the economy. Arcana Unleashed, the spellcaster-focused sourcebook Wizards of the Coast released on 15 September 2026, adds eight subclasses, 33 new and revised spells and a magical society built around nine rival factions. It also closes out one of the game's longest-running villain arcs.

What is Arcana Unleashed?

Arcana Unleashed is a rules expansion for players and Dungeon Masters who want magic to sit at the centre of a campaign rather than decorate it. Wizards of the Coast's own contents list runs to 8 new subclasses, 33 spells, 19 magical creatures, 9 arcane factions with 6 group patrons, 47 magic items including evolving relics, and Tomb of the Shadow Serpents, an introductory adventure written to fill one or two sessions. The book released on 15 September 2026, after local game stores in the US, Canada, Europe and Asia Pacific were given early access from 1 September.

Which subclasses does it add?

Four of the eight go to classes that have been waiting for them. The Arcana Domain Cleric channels magic straight from a deity, gains proficiency in Arcana and two wizard cantrips, and can use Channel Divinity to bend a spell already in flight, healing or shielding its target or landing a 1d6 penalty on their saving throw. At high level the Arcana Cleric prepares four wizard spells, one each of levels 6 to 9, which means rolling initiative with both Meteor Swarm and Mass Heal ready to go. The Arcane Archer Fighter builds a character around Arcane Shot, later redirecting missed arrows with Curving Shot and regaining uses of Arcane Shot every time they roll initiative. The Warrior of the Mystic Arts Monk converts Focus Points into spell slots and can swap two of the strikes from Flurry of Blows for a levelled spell, alternating punches and casting in the same turn. The Vestige Patron Warlock makes a pact with a forgotten god whose power is up for grabs.

What is a Vestige Patron warlock?

A vestige is a god nobody has sacrificed to in generations, which makes it an unusually eager patron. The subclass brings a Vestige Companion, a physical manifestation that fights alongside the warlock as a Fiend, Celestial or Undead, with its own damage resistance and a Divine Power usable once per long rest. The warlock can pick a domain from Life, Light, Trickery or War to add its spells to their list, and at higher levels the pair share the same damage resistance while the companion recovers its Divine Power on a short rest.

The other four subclasses are the wizard schools: Conjurer, Enchanter, Necromancer and Transmuter. That is the same set of schools that shipped in the 2014 Player's Handbook, and their return here, in a book built to expand spellcasting rather than reinvent it, is the clearest sign of who Arcana Unleashed is actually for.

Who are the nine arcane factions?

This is the part that turns a subclass book into a setting. Each of the nine factions arrives with its own leadership, renown rewards, bastion facilities, member benefits and rivalries. The Horizon Weavers work in conjuration, the Bejeweled Conclave trades in secrets through enchantment, the Covenant of the Grave studies death, and the Ninth Quill steals dangerous knowledge. Ten backgrounds tie characters to those societies, and the book supplies six group patrons so a whole party can be entangled in the same politics.

Is there a campaign to play with it?

Two of them, at opposite ends of the level range. Tomb of the Shadow Serpents is a first-level opening adventure that gets the new magic onto the table immediately. Arcana Unleashed: Deadfall is the finale: a level 11 to 20 espionage-driven adventure set in the fractured magocracy of Thay, where the lich Szass Tam is assembling a demonic undead horde and the party goes undercover to stop him. The book's bestiary includes the immortal mage Venger at challenge rating 17, alongside Living Spells and spell-warped Darkenbeasts.

Our opinion

The eight subclasses are the selling point and the nine factions are the actual product. Wizards of the Coast has spent two editions answering the question of how to give players more spells, and Arcana Unleashed answers a different one: what happens when spellcasters are a class of people with employers, oaths and rivalries. Renown rewards and bastion facilities only pay off in a campaign that runs long enough to use them, which quietly sets this book against the one-shot culture that dominates how most tables actually play. The wizard schools returning is a telling choice as well. Conjurer, Enchanter, Necromancer and Transmuter were the 2014 core options, and their presence in a book sold on fresh arcane power suggests the designers have concluded that players want the classics finished before they want a new idea. Szass Tam's farewell is the strongest argument here: an adventure that assumes level 20 characters have politics, not just hit points, is a bolder design decision than any of the eight subclasses.