Gnome Druid Build Guide

Levels 1-4

Start with a 15 in Wisdom and 14 in Constitution. At level 2, lock in the Circle of Stars. In these early tiers, your 25-foot Gnome speed is a liability, so rely on Starry Form (Archer) to deal 1d8+Wisdom force damage from 60 feet away. At level 4, do not take an Ability Score Improvement. Instead, take the Fey Touched feat. This bumps your 15 Wisdom to a 16, and more importantly, grants Misty Step to instantly bypass the Gnome's movement penalty, plus Silvery Barbs to force rerolls when enemies pass your Entangle saves.

Levels 5-10

Level 5 brings 3rd-level spells, marking your shift into a dedicated Controller. You will now default to Starry Form (Dragon) in major fights to protect your concentration on Conjure Animals. At level 8, take a standard ASI to push your Wisdom to 18. Your spell save DC is now 15, and your Gnomish Cunning ensures that enemy counter-control spells like Fear or Charm Person bounce right off your high-Wisdom advantage.

Levels 11-16

At level 12, max your Wisdom to 20. Your spell DPR jumps to 10.18, but your true value is in dropping 6th-level spells like Heal. At level 16, you need to shore up your physical saves. Take Resilient (Constitution). This bumps your 14 Constitution to 15 (preparing for a future half-feat or manual bump) and adds your proficiency bonus to concentration saves. Combined with Dragon form, you literally cannot fail a concentration check for damage under 22 points.

Levels 17-20

Level 17 unlocks 9th-level spells like Shapechange. Turning your Gnome into a Planetar while retaining your Gnomish Cunning trait is a phenomenal tactical advantage. At level 19, take the Squat Nimbleness racial feat. It fixes your 25-foot speed by adding 5 feet, gives you advantage to escape grapples (crucial since your 8 Strength makes you an easy target), and bumps your 12 Dexterity to 13 for a slight AC boost.

Cantrips

Take Thorn Whip and Guidance. Thorn Whip is exceptional for dragging enemies 10 feet closer to your frontline martials, and your 13 Intelligence makes you decent at Knowledge checks when you stack Guidance on top.

Level 1-2 Spells

Prepare Entangle and Pass without Trace. Gnome Darkvision allows you to navigate completely unlit dungeons; cast Pass without Trace and lead your party through the dark without needing a torch that would give away your position. Keep Absorb Elements handy to survive elemental blasts.

Level 3-5 Spells

Sleet Storm and Conjure Animals are your bread and butter. Drop Sleet Storm over a massive area; your Gnomish Cunning ensures enemy casters trapped inside can't easily break your concentration with a desperation Hold Person. At 4th level, Polymorph is a great panic button to turn your fragile 38-HP level 5 Gnome into a Giant Ape.

High-Level Spells

Heal (6th level) and Draconic Transformation (7th level) are mandatory. Draconic Transformation gives you a 60-foot fly speed, completely negating your Gnome movement limitations while letting you blast 6d8 force damage as a bonus action.

Fey Touched

Taken at level 4. The Gnome's 25-foot walking speed is a massive hindrance for a Controller who needs to reposition to drop a perfect Wall of Fire. Misty Step solves this, and bumping your starting 15 Wisdom to a 16 keeps your spell save DC on track.

Resilient (Constitution)

Taken at level 16. While Circle of Stars Dragon form sets a floor for your concentration rolls, taking damage above 22 points forces a DC 11+ check. Adding your +5 proficiency bonus ensures you never drop your 8th-level Tsunami.

Squat Nimbleness

Taken at level 19. A Gnome-specific feat that increases your walking speed to 30 feet and grants advantage on Acrobatics checks to escape grapples. Since your 8 Strength makes you easily pinned by large monsters, this is a lifesaver.

Tier 1 (Levels 1-4)

Equip Hide Armor, a Wooden Shield, and a Star Map spellcasting focus. Since your Dexterity is only 12, your AC will sit at a risky 13. Stay 60 feet back and rely on cover and your Gnome's small size to break line of sight.

Tier 2 (Levels 5-10)

Seek out Serpent Scale Armor (uncommon). It removes the Dexterity cap on medium armor and doesn't impose disadvantage on Stealth, allowing you to fully utilize Pass without Trace. Pair this with a Sentinel Shield to gain advantage on Initiative, ensuring you drop Sleet Storm before enemies scatter.

Tier 3 (Levels 11-16)

Acquire a Staff of the Woodlands. This allows you to cast Pass without Trace at will, turning your Gnome into a permanent stealth scout. The +2 to spell attack rolls directly buffs your Starry Form (Archer) bonus action attacks.

Tier 4 (Levels 17-20)

Hunt down a Moon Sickle +3. This boosts your spell save DC by 3, making your 9th-level Shapechange and 8th-level Feeblemind nearly impossible for enemies to resist, while adding 1d4 to any healing spells you cast.

As a Controller sitting on a 4/10 synergy chassis, the Gnome Druid needs a frontline that can capitalize on the terrain you create. You pair exceptionally well with a Path of the Totem Warrior Barbarian or a Battle Master Fighter. When you cast Spike Growth, these martials can use grappling and pushing maneuvers to drag enemies through the thorns like a cheese grater.

You also heavily benefit from an Oath of the Ancients Paladin. Stacking their Aura of Warding (resistance to spell damage) with your Gnomish Cunning (advantage on saves against spells) means your Gnome will basically ignore hostile magic, taking quarter-damage on almost every spell thrown your way.

Wizard 1 Dip

Since this build requires a 13 Intelligence (which Gnomes easily hit), a one-level dip into Wizard is phenomenal. You gain access to Shield and Silvery Barbs (freeing up your Fey Touched choice for Command), and you can grab Find Familiar. An owl familiar can grant your martials the Help action while you sit safely in the backline.

Life Domain Cleric 1

A single level of Life Cleric turbocharges your Goodberry spell. Each berry will heal 4 HP instead of 1. Since your Dexterity is only 12, you can also utilize the Heavy Armor proficiency if you manage to find non-metal heavy armor (like Ankheg plate), though the 8 Strength will drop your speed to 15 feet—making Misty Step even more mandatory.

• Playing Circle of the Moon: Gnomes are Small. If you drop out of your Wild Shape in melee, your 8 Strength and Small size mean you cannot grapple or shove effectively, and heavy weapons impose disadvantage. Stick to Stars or Wildfire.
• Wasting ASIs on Intelligence: Gnomes historically get +2 INT. Do not try to make your Druid a blaster with Wizard spells via Magic Initiate. Ignore the INT and focus entirely on maxing your Wisdom to 20.
• Forgetting Gnomish Cunning limits: Your advantage applies to Intelligence, Wisdom, and Charisma saves against magic. It does not apply to non-magical monster abilities like a Dragon's Frightful Presence. Read the monster stat block carefully.
• Ignoring your 25ft speed: Druids need to position perfectly for cone and line spells. If you don't take Fey Touched or Squat Nimbleness, you will constantly be out of range to place your Wall of Fire optimally.