The advice every riven guide still gives you is dead
Search for a riven guide and you will be told to check a weapon’s disposition before you buy, because a low-disposition weapon rolls weaker stats.
That system no longer exists.
Disposition has been retired. Every weapon in the game is now normalised to four stars, a 1.20x constant, and all rivens roll from the same range of values. A riven for a starter rifle and a riven for the newest prime roll on identical maths.
This matters practically: any guide telling you to pay a premium for a “high disposition weapon”, or to avoid a weapon because its disposition is low, is describing a system that was removed. Price and value arguments built on disposition are now worthless.
What still decides a riven is the stat line, the roll count, and what your build is missing. Those are covered below.
Where rivens actually come from
You get one for free from The War Within. That is the only guaranteed one.
After that:
| Source | What you get |
|---|---|
| Palladino, Iron Wake | 10 Riven Slivers for one veiled riven, twice per week |
| Sorties | Rifle 6.79%, Melee 8.14%, Pistol 7.61%, Shotgun 1.36%, Kitgun 2%, Zaw 2% |
| Archon Hunt | A riven as a rotation reward |
| Steel Path Circuit and Descendia | Rotating riven offerings |
| Acrithis | 15 Pathos Clamps |
| The Icebind chests | Rivens plus the Riven Splicer |
| Nightwave, Tactical Alerts, Gift of the Lotus | Occasional rewards |
| Daily Tribute milestones | Three rivens and three riven slots |
| Arbitration Honors | Archgun rivens for 35 Vitus Essence |
| Cephalon Simaris or Acrithis | Companion weapon rivens |
Palladino is gated behind Chains of Harrow, and the twice-weekly limit makes it the most reliable drip rather than a farm. Sorties are the main volume source, and shotguns are the rarest at 1.36 percent.
Veiled rivens do not occupy a slot until you unveil them, so a stack of unopened rivens costs you nothing.
The stat formula, without hand-waving
A riven stat is:
base value for that stat × random 90–110% × 1.20 disposition constant × weight
The weight depends on how many stats the riven rolled:
| Roll shape | Bonus weight | Curse weight |
|---|---|---|
| 2 bonuses, no curse | 0.99 | — |
| 2 bonuses, 1 curse | 1.2375 | −0.495 |
| 3 bonuses, no curse | 0.75 | — |
| 3 bonuses, 1 curse | 0.9375 | −0.75 |
Read the bonus column twice, because it produces the least intuitive fact about rivens.
A clean two-bonus riven has the smallest total bonus in the game. Two stats at 0.99 is 1.98 units of stat. A three-bonus-one-curse riven gets 0.9375 each, which is 2.8125 units — forty percent more total stat, at the cost of one penalty stat.
Players pay extra for “no negative” rivens. On total magnitude, they are buying the weakest shape available. A 2+1 roll is the usual sweet spot: 2.475 units concentrated in two stats, with a curse small enough to build around.
Base values, so you can check a roll yourself
Rank 8 rivens use these base values for the common stats:
| Stat | Base value |
|---|---|
| Rifle critical chance | 150% |
| Melee critical chance | 180% |
| Base damage (rifle, melee) | 165% |
| Critical damage (rifle) | 120% |
| Elemental damage | 90% |
| Fire rate | 60% |
| Melee range | 1.94 |
| Combo duration | 8.1s |
Run a two-bonus-one-curse critical chance roll on a rifle through the formula. The base is 150, the random band takes it to 135–165, the 1.20 constant takes that to 162–198, and the 1.2375 weight lands the roll between 200 and 245 percent. If a screenshot shows a rifle critical chance riven outside that band, something in it does not add up.
Cycling: the cost curve nobody plans for
Rerolling is not a flat fee. It climbs.
| Cycle | Cost | Cumulative |
|---|---|---|
| 1 | 900 | 900 |
| 2 | 1,000 | 1,900 |
| 3 | 1,200 | 3,100 |
| 4 | 1,400 | 4,500 |
| 5 | 1,700 | 6,200 |
| 6 | 2,000 | 8,200 |
| 7 | 2,350 | 10,550 |
| 8 | 2,750 | 13,300 |
| 9 | 3,150 | 16,450 |
| 10+ | 3,500 | — |
The first nine cycles cost 16,450 Kuva. The next nine cost 31,500.
The counter is per mod, not per weapon. So the moment you pass roughly nine rerolls on one riven, the rational move is to start over on a fresh unrolled riven of the same weapon — the wiki puts the saving at 15,050 Kuva over the second block of nine.
Most players keep feeding the same mod out of habit and pay nearly double per roll for the privilege.
Trait locking doubles everything
Locking a stat keeps it through subsequent cycles. It also doubles the Kuva cost of every cycle, starting at 1,800 for the first one.
Locking is worth it when you have one perfect stat and need the rest to catch up. It is a trap when you lock something mediocre and then grind into the 3,500 cap paying 7,000 per roll.
Two behaviours to know:
- The lock applies only while the menu is open. Reopen it and you must lock again.
- A locked trait freezes the shape of the riven. A two-positive-one-negative riven stays two-positive-one-negative until you unlock.
Splicing: traits that cannot roll normally
The Riven Splicer comes from The Icebind. Splicing consumes two existing traits and produces one that is not in the normal pool.
Common recipes:
| Trait 1 | Trait 2 | Result |
|---|---|---|
| Heat damage | Cold damage | Blast damage |
| Toxin damage | Electricity damage | Corrosive damage |
| Toxin damage | Heat damage | Gas damage |
| Electricity damage | Cold damage | Magnetic damage |
| Heat damage | Electricity damage | Radiation damage |
| Damage vs Grineer | Damage vs Corpus | Damage vs Orokin |
| Damage vs Infested | Damage vs Grineer | Damage vs Scaldra |
| Magazine capacity | Reload speed | Ammo efficiency |
| Weapon recoil | Ammo maximum | Ammo efficiency |
| Heavy attack efficiency | Combo duration | Heavy attack wind-up speed |
| Attack speed | Range | Parry angle |
Four rules that decide whether a splice is worth it:
- The consumed traits are gone, replaced by a random trait to keep the count. That random draw is where a good splice goes wrong.
- The spliced trait keeps the higher of the two random values rather than rolling fresh, so splicing two high rolls preserves the good one.
- Spliced traits do not count as locked, so they do not double your Kuva cost — and you can still lock one other trait alongside.
- Only one spliced trait per riven, and the result is always positive.
Splicing is the only way to get an elemental stat onto a riven that the weapon cannot otherwise reach, which is why it is worth the Icebind trip for a build-defining riven.
Transmutation: turning four bad rivens into one
A Riven Transmuter plus four rivens produces one new veiled riven. The type follows the sacrificed rivens — four rifle rivens give a rifle riven.
Transmuters come from capturing an Eidolon Hydrolyst (two per capture), from Loid for 180 Vessel Capillaries each, or from Palladino for 10 Riven Slivers each.
This is the correct disposal route for rivens for weapons you will never build. Selling them for endo wastes the slot.
Slots: the real ceiling
- You start with 15 riven slots.
- Extra slots cost 20 platinum each from the Market, up to 165 purchasable, for 3,300 platinum total.
- Mastery rank 30 grants 30 more.
- The hard maximum is 210 slots.
Because veiled rivens take no slot until unveiled, the practical strategy is to keep a buffer of veiled rivens and unveil them in batches when you have space, rather than unveiling everything and stalling.
What a riven cannot do
A riven cannot change a weapon’s identity. It adds stats to a build; it does not fix a weapon with the wrong damage type for the mission, and it does not replace a mod you are missing.
It also cannot rescue a weapon you do not enjoy firing. Before you spend 16,450 Kuva on rerolls, decide whether the weapon itself is one you will still be using in a month.
For the weapons worth investing in, see best weapons, the Kuva and Tenet guide and Incarnon weapons. For the rest of the build a riven sits inside, the mods guide covers polarity and capacity. For pricing a roll you want to sell, the trading guide covers the market side.