Liches are some of the most terrifying and iconic monsters in D&D. They are also, for some reason, the only option for an evil wizard that Dungeon Masters have to throw at players. However, there are types of wizards that can be just as terrifying and present just as much of a threat to your fantasy world as Liches.

Enter, the Transmuter Wizard. Transmuters in D&D like to change things into different forms. Sadly, while the player version of this subclass doesn’t have much in the way of epic transformations, you can do whatever you want as a DM.

The Transmuter Wizard is a powerful bad guy with a ton of minions and cool tricks at their disposal. If you’re looking for your next Big Bad or looking for some examples of how you can really punch up a transmuter, you might just find what you’re looking for here.

Monster Mash

A cursory look through the Monster Manual will handily demonstrate that D&D is filled with creatures created by mad wizards. Owlbears are the iconic example, but there are so many others. If you’re looking for a big, bad wizard, look no further than the Transmuter, the wizard most interested in cross-breeding monsters and creating new, horrible forms of life.

When it comes to mad wizards obsessed with shaping the world into their own image of perfection, the transmuter is king. The plot hook for this one is simple. Overrun the starting town your players are in with a horde of monstrosities who kill the villagers and raid every stable, animal shelter, and dog house for new material.

One of the biggest benefits of running a Transmuter as your Big Bad is the litany of monsters D&D already has that your wizard may have created. From iconic D&D baddies like the mimic to classic mythological monsters. You can easily reflavor hippogriffs, griffons, and manticores as transmuter creations.

Having a transmuter as your Big Bad also gives you the chance to play around with adding your own weird creations. In my case, I love adding in monsters from Magic the Gathering that my players aren’t likely to have seen before. There’s always something new, from Thoctars, to Slivers, to the majestic Phelddagrif. However, this is only the tip of the iceberg.

Find your favorite monster from your favorite media, and make it your transmuter’s signature creation. A fan of Elden Ring? Add in a land octopus and watch your players squeal in horror. Pull out the Rancor, from Return of the Jedi! Take a slaad, or any other creature that makes more of itself when it kills, and instead describe it as a Xenomorph!

Animal I Have Become

The potential for the transmuter doesn’t stop at monster mash-ups. Any good wizard worth their salt eventually escalates from experimenting on animals… to human trials. For those of you who are fans of anime, the fate of Nina Tucker from Full Metal Alchemist is an excellent example of what happens when a transmuter goes too far.

The transmuter is an easy wizard to make terrifying because of the multitude of ways you can use them to harm people, not just animals. You could take a hill giant and instead describe it as a disturbing, bloated human, a la Attack on Titan. An ettin is a two-headed giant that could just as easily be two orcs fused together. If a monster has legendary actions, you could describe that it lashes out with an extra arm grafted onto it from another creature.

For more examples, consider centaurs. In classical mythology, these creatures are their own species, naturally occurring with their own habits and culture. With a transmuter in your setting, they don’t have to be. Describe a human whose torso has been messily grafted onto a horse. These are your centaurs now.

Media is full of some very juicy examples for you to pick from. Spiderman’s Venom, or symbiotes in general, could be an organism created by the transmuter. The Hulk is another great choice! Not to mention, Godrick, the Grafted, from Elden Ring.

Finally, let’s not forget the biggest benefit of running a transmuter who’s moved onto human trials: your players might be personally affected. There are several player races that could be a result of your transmuter’s intervention. What’s more, your players may face their quest knowing that if they fall, they may just be the blueprint for your Transmuter’s next magnum opus.

One Winged Angel

What is more classic than the Big Bad having a final act breakdown and transforming themself into a terrible monster to do battle with the heroes? With the transmuter, this transformation is baked into their resume. When the final battle comes, or when the wizard makes sporadic appearances during the narrative, the heroes might be horrified at what they see.

The transmuter gives you the option to experiment with their statblock. While they, of course, have access to the full spellcasting of a wizard, you can add in attacks and abilities from other monsters at your discretion.

Give your transmuter the messy “Extract Brain” action from a Mind Flayer’s statblock. Have your transmuter breathe fire in a grotesque imitation of a dragon. Let them take to the skies on wings “borrowed” from a wyvern, or a griffin, or a roc. Describe the transmuter’s awful third eye that they’ve grown into their own forehead, and then describe as they shoot a beholder’s eye beams out of it.

If you’re eager to use this before the end of the campaign, you can even set this up by having similar transformations from the transmuter’s lieutenants. If you’re the kind of Dungeon Master who builds two-phase fights, the first phase might be the normal monster, while the second phase bears the transmuter’s signature. The first phase of a dragon fight might go normally, only for the dragon to morph into the Gaping Dragon from Dark Souls for the second phase.

Whatever horrifying monster transformations you add to your Big Bad and your important boss fights, be sure to make it your own. Let your imagination run wild!

Not Even My Final Form…

I’ve wanted to run a transmuter wizard for a while now. The little experience I’ve had with it led to some of the most compelling encounters in my long-running D&D campaign. 

If you’re looking for something fresh to try, the transmuter wizard is a great choice that lets you use a ton of monsters from the monster manual, while giving you the freedom to create your own. So go out, reshape the world in your image, and bring the world to its knees with the transmuter.