Dragonborn Assassin Rogue Build Guide

Levels 1-4

Start Rogue and immediately put your Expertise into Stealth and Perception. With a 15 Dexterity, you need all the help you can get to secure surprise. At level 3, you unlock the core of the subclass: Assassinate and Assassin's Tools. Your entire game plan revolves around acting first and attacking creatures that are surprised to secure an automatic critical hit. Use Draconic Flight to hover above sightlines before combat initiates. At level 4, take the Piercer feat. This bumps your Dexterity to 16 and adds an additional damage die on critical hits—which you are guaranteed to get whenever you successfully trigger Assassinate.

Levels 5-10

Level 5 brings 3d6 Sneak Attack and Uncanny Dodge. When stacked with your Draconic Damage Resistance, you become incredibly difficult to kill for a d8 hit die martial. At level 8, use your Ability Score Improvement to take the Alert feat. Winning initiative is non-negotiable for an Assassin, as Assassinate's advantage only applies against targets that haven't taken a turn. Level 9 grants Infiltration Expertise. Because your Charisma is a dismal 8, you cannot rely on raw Deception checks to bluff your way into noble courts. Infiltration Expertise allows you to completely bypass those checks by spending the gold and time to create an unfailing false identity.

Levels 11-16

Level 11 grants Reliable Talent, permanently fixing any bad rolls on your Stealth checks. Level 12 is your chance to cap Dexterity at 20. Level 13 is a massive power spike with Envenom Weapons. Taking a bonus action to apply poison that deals damage equal to your Sneak Attack dice (7d6 at this level) is absurd burst damage. If you land this on a surprised target, the base weapon and Sneak Attack damage double from the Assassinate crit, and the target must make a Constitution save against the massive poison burst. At level 16, take the Skulker feat so you can finally hide in dim light, mitigating your lack of Darkvision.

Levels 17-20

Level 17 delivers your capstone: Death Strike. When you hit a surprised creature, they must make a Constitution save (DC 8 + DEX mod + PB). If they fail, the damage is doubled. This doubling happens after the Assassinate critical hit. A Rapier attack with 9d6 Sneak Attack, Piercer, and Envenom Weapons will easily exceed 150 damage on a failed save, outright deleting boss monsters before they roll initiative. Finish your build at level 19 with the Poisoner feat to ignore poison resistance, ensuring your Envenom Weapons feature remains relevant in the late game.

Piercer

Take this at level 4. It provides a +1 to Dexterity, rounding out your starting 15 to a 16. More importantly, it allows you to roll one additional damage die when you score a critical hit with a piercing weapon. Because your level 3 Assassinate feature guarantees critical hits against surprised enemies, Piercer represents guaranteed extra damage on your alpha strike.

Alert

Take this at level 8. Assassinate has two parts: crits on surprised targets, and advantage on targets that haven't taken a turn. If you roll poorly on initiative, you lose that advantage. The +5 to Initiative from Alert ensures you almost always beat your targets to the draw, allowing you to land your Sneak Attack reliably on round one.

Skulker

Because Dragonborn lack Darkvision, you will frequently find yourself in dim light rather than total darkness to avoid imposing disadvantage on your own Perception checks. Skulker allows you to hide when you are only lightly obscured, fixing the inherent anti-synergy of playing a stealth class on a race without night vision.

Poisoner

While Assassin's Tools gives you proficiency with the poisoner's kit, the real reason to take this at level 19 is to bypass poison resistance. Your level 13 Envenom Weapons feature deals massive poison damage, and at high tiers of play, resistance to poison is incredibly common. This feat ensures your subclass features actually stick.

Tier 1 (Levels 1-4)

Start with a Rapier and a Shortbow. Your priority is acquiring Goggles of Night as soon as possible. The lack of Darkvision on a Dragonborn is a critical flaw for an Assassin trying to get the drop on enemies in dungeons. You also need to purchase a Poisoner's Kit to make use of your Assassin's Tools feature during downtime.

Tier 2 (Levels 5-10)

Seek out a Weapon of Warning. Even if it's just a dagger you keep on your belt, advantage on Initiative rolls paired with your Alert feat guarantees you will trigger the advantage portion of Assassinate. A Cloak of Elvenkind is also mandatory to offset any bad Stealth rolls before Reliable Talent kicks in at level 11.

Tier 3 (Levels 11-16)

Look for a Dragon Wing Bow to lean into your Draconic Ancestry, providing elemental damage that matches your breath weapon. Alternatively, an Oathbow is the ultimate Assassin weapon. When you swear your oath on a surprised target, the extra 3d6 piercing damage is doubled by your Assassinate critical hit, leading to staggering burst damage.

Tier 4 (Levels 17-20)

A Manual of Quickness of Action pushes your Dexterity to 22, increasing your Initiative, AC, and the DC for your level 17 Death Strike. Try to acquire a Blood Fury Tattoo; the extra 4d6 necrotic damage on a hit will also double during an Assassinate critical hit, turning you into an unparalleled single-target executioner.

An Assassin lives and dies by the Surprise condition. If your party clanks around in heavy armor, you will never trigger your level 3 Assassinate crits or your level 17 Death Strike. You absolutely need a party member capable of casting Pass without Trace. A Gloom Stalker Ranger or a Druid is your best friend, as the +10 to Stealth checks ensures the entire party can successfully ambush the enemy.

A Trickery Domain Cleric is another phenomenal pairing. Not only can they provide Pass without Trace, but their Blessing of the Trickster can offset the disadvantage of your Paladin's plate armor. Later on, a Cleric casting Holy Weapon on your rapier adds 2d8 radiant damage, which perfectly doubles when you secure an Assassinate critical hit.

Gloom Stalker Ranger 3

Taking three levels of Ranger completely solves the Dragonborn's weaknesses. Umbral Sight grants you 60 feet of Darkvision, and Dread Ambusher gives you a bonus to Initiative equal to your Wisdom modifier. More importantly, Dread Ambusher gives you an extra attack on the first turn of combat that deals an extra 1d8 damage. If you hit a surprised target, both attacks automatically crit via Assassinate.

Fighter 2

A two-level dip into Fighter grants the Archery or Dueling fighting style and Action Surge. Action Surge is incredible on an Assassin. You can attack on your turn, use Action Surge to Ready an action to attack on the next creature's turn, and effectively secure two Sneak Attacks in the first round of combat before the enemy can react.

• Assuming Surprise is easy to get: Surprise is a specific mechanical condition in 5e. If even one enemy perceives even one member of your party, Surprise is blown. If you don't coordinate stealth with your team, your Assassinate and Death Strike features are completely useless.
• Using Breath Weapon on Turn 1: Round one is for single-target elimination using Assassinate. Your Breath Weapon forces a saving throw, meaning it cannot critically hit. Save your Draconic Breath Weapon for round two when you are surrounded by minions.
• Ignoring Initiative: The second half of Assassinate grants advantage against creatures that haven't taken a turn. If you roll low on Initiative, the enemy takes their turn (even if they are surprised and do nothing), and you lose your advantage.
• Bonus Action clashing with Envenom Weapons: At level 13, Envenom Weapons requires a bonus action. This means you cannot use Cunning Action to Hide or Disengage on the turn you apply it. Use Draconic Flight to position yourself safely so you don't need to Disengage.