Ergo Sum

Silent. Silent. Silent.

Ergo Sum icon

Exotic Sword

Ergo Sum

Silent. Silent. Silent.

Ergo Sum is an Exotic Sword in Destiny 2 that deals Kinetic damage from the Energy slot and uses special ammo. Its signature exotic perk is Gathering Light. Its perk pool includes Transcendent Duelist. Where to get it: Exploring the Pale Heart.

How to get Ergo Sum

Ergo Sum is an exotic sword that comes with random perks. You get your first one from the Destined Heroes quest in the Pale Heart, which needs The Final Shape and starts with a radio transmission at the Old Tower after the campaign.

  1. Queens, Part 1.
  2. Found in the Dark and Lost in the Light.
  3. Queens, Part 2, where you receive the Dyadic Prism and claim Ergo Sum.

More copies: extra rolls come from resetting the Pale Heart Pathfinder (up to two resets per week per character) and from Grandmaster Excision.

Catalyst

The catalyst, Transcendent Steel, gives Ergo Sum ammo when you deal damage with Transcendent grenades. It came from completing Excision on Grandmaster.

All possible perks

Gathering LightIntrinsic

Final blows with this weapon grant stacks of Gathering Light, improving guard stats and lunge range.
Stowing this weapon consumes all stacks, granting melee, grenade, and class ability energy.

Each column shows every perk that can roll in that slot. Click a perk to read what it does and see all weapons that can roll it.

Exotic catalyst

Ergo Sum Catalyst

Dealing damage with a Transcendent grenade grants Ergo Sum ammo.

Base stats

Impact60
Swing Speed40
Charge Rate30
Guard Resistance0
Ammo Capacity44
Ammo Generation15
Charge Time30
Magazine35

Base values from the game files, before barrels, magazines, mods and masterwork.

Overview & how to get it

Rarity
Exotic
Type
Sword
Element
Kinetic
Slot
Energy
Ammo
Special
Source
Exploring the Pale Heart
Craftable
No

Lore

Ergo Sum
You are a child waking from a long and dreamless sleep. Is it still today, or have you slept into tomorrow (and tomorrow, and tomorrow, until the days buried you as much as the sand)? Gentle hands brush away the grains, but your voice is so soft that they cannot hear you over the sound of their own heartbeats. You are a moon. You feel heavy, so heavy, but to the stargazer you hang weightless in the sky. When the stargazers call out, you do not answer. They would give themselves up for you; abandon their own dreams to chase you. You love them too much to condemn them so. You are a lighthouse keeper. You are watching over a sleepy coastal village as the storm clouds roll in, and you are flashing the signal lantern, faster and faster and brighter and brighter, but they do nothing. You are trapped on an island, in a tower, signaling desperately that It is coming, and still they do not run. They are going to die—and if you do not run, you will die too. You are leaning out over the ocean. Sometimes the fish brush against your fingers and believe that they have felt the divine; sometimes the tide recedes, and the fish do not know you except by your absence. And today, you strive with all your might to reach the water, because It is here, the great dark shadow of the shark parting the water like a knife, and you cannot warn them, but you must. You must try. You cannot bear to lose even one more. You are carrying a tower of books. If you recited one title each second, you would not finish before the heat death of the universe. And every year, every day, every minute, Its hands add more to the pile. A man reaches for one of the books, for you, and you want so very badly to reach back, to take his hand and tell him that you must bear it just like he must, forever, the memory engraved in quartz—but your hands are full. You are a prisoner. The cage is so small that you can barely breathe. He screams at you to share your gift. You would not give it to anyone who thought of it so. It is a burden, a terrible weight that you have already asked too many to bear, to be crushed by. You could say all this, and more. You do not. You are reaching over a chasm, into which countless paths feed like arteries. You are trying to reach the people on the other side, but you cannot bridge the gap alone. You watch them turn, one after another, to walk down, down, down into the abyss, until It consumes them entirely. You are as surprised as anyone else when one of those wanderers comes back up the path, still reeking of decay, and reaches back to you. You are drowning. The water roils, dragging you down, and you are tired, so tired. The deep, dark ocean has gotten into your lungs, droplets of ink dispersing in silver blood. This time, you think, this time It has won. But when you look up, you see a figure diving toward you, fighting their way down through the suffocating waves, reaching out just like you've reached out to them, so many times before. You have so little strength left, but you do have it, that last gasp of air in your chest. You reach back—and in your hand is a sword.

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