The Eldritch Knight is a prestige class in Dungeons & Dragons 5th Edition that fuses martial training with arcane spellcasting. Designed for fighters and other warriors, it enables characters to weave spells into combat while retaining the durability and weapon expertise that defines the fighter chassis.
This guide walks you through building, optimizing, and playing an Eldritch Knight in campaigns from level 3 onward, emphasizing synergy between swordplay and sorcery.
Core Class Features at a Glance
| Level | Hit Points | Proficiencies | Spellcasting Focus |
|---|---|---|---|
| 3rd | 10 + CON mod | Medium armor, shields, simple weapons | Cantrips known: 2 |
| 7th | 10 + CON mod | Add martial techniques | 1st-level spells: 2 slots |
| 10th | 10 + CON mod | Bonus Feat | 2nd-level spells: 2 slots |
| 15th | 10 + CON mod | Bonus Martial Technique | 3rd-level spells: 2 slots |
| 18th | 10 + CON mod | Bonus Feat | 4th-level spells: 3 slots |
Martial Archetype and Weapon Training
Fighter Origins
Starting as a Fighter, Eldritch Knight gains the full Fighting Style and Second Wind features. At 3rd level you choose an archetype such as Battle Master or Champion to further define your combat identity, while still accessing Eldritch Knight abilities.
Weapon and Armor Proficiency
You gain medium armor, shields, and simple weapon proficiency from the class. While you do not learn new martial weapons, your existing fighter proficiencies let you optimize builds around longswords, greatswords, or polearms without sacrificing spellcasting versatility.
Spellcasting through Levels
Spell Slots and Cantrips
Spell slots scale predictably, starting with two 1st-level slots at 3rd level and adding higher-level slots at 10th and 15th. You prepare a small list of spells, focusing on utility and battlefield control that complements your martial actions.
Metamagic and Combat Magic
Using Action Surge, you can cast a spell and still make an additional weapon attack in the same turn, enabling burst damage or defensive reactions. Careful selection of spells like Shield and Misty Step keeps you mobile while preserving your actions for attacks.
Tactics and Optimization Tips
- Pair Great Weapon Master or Sharpshooter with spell triggers for flexible action economy.
- Use Mage Armor and Absorb Elements to improve durability against spell attacks.
- Coordinate War Caster and Sentinel to maintain concentration and control enemy movement.
- Invest in Dexterity for AC and initiative, while keeping Strength high for melee damage.
- Leverage Bardic Inspiration or Help actions from allies to boost attack rolls and saves.
Advanced Integration and Campaign Play
In higher-level campaigns, Eldritch Knight remains relevant by adapting spell choices to handle planar threats and social challenges. Combining martial mobility with reliable defenses ensures that you stay effective from the dungeon to the throne room.
FAQ
Reader questions
How does Action Surge interact with spellcasting for Eldritch Knight?
You can use Action Surge to take an additional action, which can be used to cast a spell, make an attack, or Dash, Disengage, or Help. This lets you cast a spell and still attack with your weapon later in the same turn.
What martial techniques are most efficient for an Eldritch Knight build?
Durable options like Improved Combat and Menacing Attack synergize well with a front-line martial role, while precise maneuvers such as Precision Attack boost damage output without consuming spell slots.
Can Eldritch Knight maintain concentration on multiple spells during combat?
You can maintain only one concentration spell at a time, so choose between defensive options like Shield or utility spells like Misty Step based on the encounter, and avoid wasting slots on non-concentration spells when focused.
Which ability scores should I prioritize when building an Eldritch Knight?
Prioritize Strength for melee damage, Dexterity for AC and initiative, and Constitution for hit points. Secondary focus on Intelligence for spell save DC and spell attack bonus improves overall consistency.