Complete Arcane is a supplemental rulebook for the 3.5 edition of the Dungeons & Dragons role-playing game.

Instead of spells, warlocks gain a limited number of invocations, spell-like abilities with a distinctively sinister flavor.

Some invocations add effects to the warlock's eldritch blast, causing sickness, or blindness, or fright, etc.

The five elements of Wu Jen magic are wood, fire, water, earth, and metal.

Magic items include variant forms for potions and scrolls such as ceramic tiles that are broken to cause a spell effect instead of liquids that must be consumed, as well as spellbook materials for the discerning (or paranoid) wizard.

The last chapter of the book details how arcane magic can affect a campaign world, including the uses and abuses of Enchantment spells, flight, teleportation, and invisibility, and how nonmagical people would react to bards, sorcerers, wizards, and warlocks.

Cover art was by Matt Cavotta, with interior art by Steve Belledin, Matt Cavotta, Dennis Crabapple McClain, Emily Fiegenschuh, Doug Kovacs, Ginger Kubic, Jeff Miracola, Monte Moore, William O'Connor, Michael Phillippi, Ron Spencer, and Franz Vohwinkel.