What CR is a Level 20 Character in D&D 5e? A Beginner‘s Guide

Reaching level 20 in Dungeons & Dragons is an epic accomplishment. Your character stands shoulder-to-shoulder with legendary heroes like Elminster and Mordenkainen, able to reshape reality through the force of your will. But how do you translate a nigh-godlike level 20 player character into an appropriate challenge rating for combat encounters? That‘s the tricky question this article will cover.

Determining Challenge Rating for PCs

First, let‘s review the basics. In D&D 5e, a monster‘s challenge rating (CR) provides the DM a rough gauge of how difficult that enemy will be for a party of adventurers. The Dungeon Master‘s Guide states that a player character‘s CR is "typically equal to the character‘s level".

So according to the core rules, a freshly created level 20 fighter or rogue with no magic items should be CR 20. That provides a starting point, but CR is an imperfect system. A optimized character build, especially with potent magic items, can far exceed the power of an average NPC of the same level.

As a fellow gamer, I evaluate CR on a case-by-case basis. I‘ll consider your class, subclass, abilities, spells, gear and any boons. If they give you a major leg up, I boost your CR by 2 or more. My goal is to create fun, memorable combat encounters for the whole group. An accurately tuned CR helps make that happen.

Official Examples: The Archmage

The Archmage in the Monster Manual provides a great official example. This menacing spellcaster is equivalent to a level 20 wizard. With access to 9th level spells and abilities like Spell Resistance, the Archmage appropriately weighs in at CR 12.

Now imagine if that Archmage also had a Staff of the Magi and Robe of the Archmagi. I‘d probably bump him up to CR 15 or 16. Magic items make a difference!

So for an extremely capable level 20 wizard, CR 20 is a good rating. The Archmage shows that CR 12-15 is reasonable for a standard unequipped level 20 character.

Class and Subclass Features

When rating your level 20 character‘s CR, I closely evaluate all your class and subclass features. Anything providing a major boost in damage, survivability, mobility or battlefield control pushes you into epic villain territory. Let‘s look at some examples:

Barbarian: Your Rage Beyond Death ability lets you keep fighting while below 0 hit points, making you a terrifying unstoppable juggernaut. CR 17+

Moon Druid: With access to elemental wild shapes like mammoths, you can out-tank any damage while dishing it out in melee. CR 21+

Twilight Cleric: Your Twilight Sanctuary provides temp HP equal to 5x your cleric level. That‘s potentially 100 temp HP to your whole party every turn! CR 20+

Chronurgy Wizard: Your Arcane Abeyance gives you an extra concentration slot and clutch counterspells. CR 21+

Eloquence Bard: Your Unfailing Inspiration turns any failure into a success. Combined with Magical Secrets, you have phenomenal action economy. CR 19+

See how certain combinations push you way past the base CR 20? As your DM, I‘ve got to factor those kinds of mighty abilities in.

Gearing Up for Epic Adventures

Magic items also considerably improve your capabilities. A Holy Avenger in your Paladin‘s hands makes you far deadlier against fiends and undead. Spellcasters wielding staves that boost their spell attack modifier and save DC also warrant a higher CR.

Legendary boons from gods or other planar entities can bridge the gap between mortal and deity. I‘d think carefully before handing those out to PCs at level 20 though. You may rapidly outscale typical threats!

Here are some ballpark CR values for a standard array level 20 character without significant gear:

As you can see, full spellcasters generally have the highest CRs at level 20. But a highly optimized martial class build could certainly keep up, especially with the right magic items.

Action Economy Tips

Here‘s one last thing I consider when using a level 20 character as an enemy boss: action economy. Even with an inflated CR, one lone villain is at a huge disadvantage against an entire high level party.

As the DM, I may give your archvillain some minions to even the odds. Or use lair actions and legendary resistances to help balance their side of the action economy scale.

Alternatively, an epic 1-on-1 duel against another level 20 character hero can be amazing without any extra abilities needed. That‘s the stuff of legends!

Time to Hit Epic Levels

Level 20 represents the pinnacle of character progression in D&D 5e. With the right build, gear, and a dash of optimization, you‘re ready to take on demon lords, archdevils, demigods, and all the multiverse can throw at you.

I hope this guide gave you some insights into rating these epic PCs using the CR system. Now it‘s time to unleash your creativity! Build the ultimate barbarian, wizard, paladin or multiclass combo. Just let me know so I can tune the encounters accordingly. Your legend awaits!