How to Get Fafnir in Destiny 2: Legendary Marks, Tenet of Bravery and the Catalyst

Fafnir costs 50 Legendary Marks at the Tenet of Bravery in the Tower. Here's how to unlock the vendor, get the Marks for free and track down the catalyst from Xûr.

Fafnir is one of the last Exotics Bungie added to Destiny 2, and it's also one of the easiest to get. There's no quest chain, no raid and no random drop. You buy it from a statue in the Tower with a currency the game hands you for free the moment you log in. The only part that takes some patience is its catalyst.

This guide is up to date for the current version of the game (Monument of Triumph, Update 9.7.0, live since June 9, 2026; still current as of Update 9.7.0.5).

Quick answer


Weapon	Exotic Linear Fusion Rifle – Void, Heavy ammo
Sold by	The Tenet of Bravery, one of the Monument of Triumph vendors in the Tower courtyard
Price	50 Legendary Marks
Free Marks	The Special Deliveries kiosk gives you exactly 50 Marks
Catalyst	Sold by Xûr for Strange Coins when it's in his weekly stock

In short: claim your Special Deliveries, walk over to the Monument and buy Fafnir from the Tenet of Bravery. That's it.

What is Fafnir?

Fafnir is a Void, Heavy-ammo Exotic Linear Fusion Rifle. Its party trick is an alternate action that sacrifices ammo from your reserves to weaken targets with Void. That makes it a strong pick for raid and dungeon bosses, where a debuff helps the whole fireteam.

Requirements

Destiny 2 updated to the Monument of Triumph version (Update 9.7.0 or later).
50 Legendary Marks. These come from Monument of Triumph Triumphs, plus a one-time 50-Mark gift.
Access to the Tower. Everything happens in the Tower courtyard and the Bazaar.

Step-by-step: how to get Fafnir

Load into the Tower. Land in the courtyard.
Claim your Special Deliveries. Find the kiosk between Banshee-44 and Master Rahool. It hands out the Toast to the Monument emblem, two Bright Engrams and 50 Legendary Marks – exactly what Fafnir costs.
Go to the Monument of Triumph. The four Tenet vendors – Bravery, Devotion, Sacrifice and Death – are in the courtyard around the Monument.
Open the Tenet of Bravery. It's the vendor you need, and it sells Fafnir alongside the other Exotic, Heir Apparent.
Buy Fafnir for 50 Legendary Marks. Your first purchase from Bravery also unlocks the other three Tenet vendors, so this one buy does double duty.
Equip it in your Heavy slot and try the alternate action on a boss to see the weaken effect in action.

If you already spent your free 50 Marks on something else, you'll need to earn more before you can buy Fafnir – see below.

How to earn more Legendary Marks

Legendary Marks come from completing Triumphs in the Monument of Triumph category. Regular activity completions only pay out when they tick off one of those Triumph objectives.

Find the list fast. Use View Triumphs on any Tenet vendor screen, or open Journey → Triumphs.
Pick the easy ones first. The category is large, so sort through it and grab whatever matches what you already play.
Plan for the rest. Once Fafnir is yours, the same Marks buy Heir Apparent, Exotic armor ornaments, shaders and more from the four Tenets, so keep earning them.

How to get the Fafnir catalyst

Video: Xûr selling the Fafnir catalyst in the Tower (by DFP)

Fafnir's catalyst, No Distractions, reduces flinch while you're aiming the weapon for a short time – handy when a boss is hammering you during a damage phase.

The catalyst isn't sold by the Tenet of Bravery. When Monument of Triumph launched, it was offered by Xûr for 71 Strange Coins. Here's how to grab it:

Check Xûr's stock each week. He's in the Tower Bazaar and his inventory refreshes when he returns at the Friday reset.
Save up Strange Coins so you can buy it the week it appears.
Buy it the week it shows up and check the weapon's catalyst slot to see what's needed to activate it.

Xûr's catalysts rotate. For example, his inventory for November 6–10, 2026 included two catalysts, but not Fafnir's – so don't assume it's always available.

Tips and common mistakes

Don't spend your free Marks first. The 50-Mark gift lines up perfectly with Fafnir's price. Spend it elsewhere and you'll have to grind Triumphs before you can buy the gun.
Claim Special Deliveries right away. There's no reason to wait – collect it on your first visit to the Tower.
Bravery is the key that opens everything. If the other Tenet vendors seem locked, you simply haven't bought anything from Bravery yet.
Watch your reserves. Fafnir's weaken effect eats into your Heavy ammo, so time it for when the whole team is ready to deal damage.
Don't skip Xûr. If you see the catalyst in his stock, buy it that week – it may not come back soon.

This article was written by AI (Claude) and checked against the sources above. Games are updated regularly, so details may change.