Sourcemined
Elden Ring
MapsReleasesSupport
KatanaChanged in 2 patchesVerified on build 25080141
Rivers of Blood

Rivers of Blood

With its requirements met (Str 12 · Dex 18 · Arc 20), Rivers of Blood reaches 512 attack rating at +10.

Attack rating (+10)
512
Scaling (+10)
Str E · Dex B · Arc D
Class
Katana
Weight
6.5
Requires
Str 12 · Dex 18 · Arc 20
Skill
Corpse Piler · FP 9
Passive
Causes blood loss buildup (50)
Upgrades with
Somber Smithing Stones (+10)

Attack rating by affinity 1

At Str 12 · Dex 18 · Int 10 · Fai 10 · Arc 20 (each stat at the weapon's requirement, 10 where it has none), one-handed.

Affinity+0MaxDamage at maxScaling at max
Standard183512 +10Physical 282Fire 230Str EDex BInt –Fai –Arc D

Try your own stats, two-handing and any upgrade in the AR calculator.

Attack rating by stat (Standard, +10)

5005506006501240608099Stat level206080
  • Dexterity
  • Arcane
  • Strength
Each line raises one stat from the requirement to 99 with the others held at the requirement; dashed lines are Dexterity's soft caps.
Show the numbers
Stat levelDexterityArcaneStrength
12––512
15––514
18512–516
20–512–
21521–518
23–520–
24527–519
26–529–
27533–520
29–536–
30539–521
32–545–
33544–523
35–553–
36550–524
38–560–
39555–525
41–569–
42560–526
44–576–
45566–527
47–585–
48570–528
50–592–
51575–529
53–597–
54579–529
56–601–
57583–530
59–605–
60586–531
62–609–
63590–532
65–612–
66594–532
68–617–
69597–533
71–621–
72601–534
74–625–
75605–535
77–629–
78609–535
80–634–
81612–536
83–636–
84613–536
86–638–
87615–537
89–638–
90616–537
92–640–
93618–537
95–642–
96619–537
98–644–
99620645538
StatSoft capsAR per point, by stretchAt 99
Dexterity20, 60, 8018–20: +3.5 · 20–60: +1.68 · 60–80: +1.25 · 80–99: +0.47620 from 512
Arcane50, 8020–50: +2.67 · 50–80: +1.4 · 80–99: +0.58645 from 512
Strength20, 60, 8012–20: +0.63 · 20–60: +0.35 · 60–80: +0.25 · 80–99: +0.11538 from 512

Soft caps are the breakpoints of the scaling curve the game assigns this weapon; past each one a point adds less (or, for some curves, more).

Attack rating by upgrade

02004006000246810Upgrade level
At the weapon's requirements (Standard).
Show the numbers
Upgrade levelAttack rating
0183
1212
2243
3273
4306
5338
6371
7405
8440
9475
10512

Status buildup by upgrade

51515252520246810Upgrade level
Per hit at Arcane 20. Affinities not shown keep the same buildup at every level.
Show the numbers
Upgrade levelBuildup per hit
051
151
251
351
451
551
651
752
852
952
1052

#5 of 10 katana weapons by attack rating

  1. Meteoric Ore Blade550 +10
  2. Star-Lined Sword539 +10
  3. Hand of Malenia539 +10
  4. Moonveil538 +10
  5. Rivers of Blood512 +10
  6. Sword of Night471 +10
  7. Serpentbone Blade401 +25
  8. Nagakiba388 +25
  9. Dragonscale Blade372 +10
Standard affinity at max upgrade, each weapon at its own requirements. A full bar is the class's strongest (Meteoric Ore Blade, 550).

By upgrade level (Standard)

LevelARPhysicalFireCost
+01839786—
+121211399Somber Smithing Stone [1] × 1
+2243130113Somber Smithing Stone [2] × 1
+3273147126Somber Smithing Stone [3] × 1
+4306165141Somber Smithing Stone [4] × 1
+5338183155Somber Smithing Stone [5] × 1
+6371202169Somber Smithing Stone [6] × 1
+7405221184Somber Smithing Stone [7] × 1
+8440241199Somber Smithing Stone [8] × 1
+9475261214Somber Smithing Stone [9] × 1
+10512282230Somber Ancient Dragon Smithing Stone × 1

From +0 to +10: 1 Somber Smithing Stone [1], 1 Somber Smithing Stone [2], 1 Somber Smithing Stone [3], 1 Somber Smithing Stone [4], 1 Somber Smithing Stone [5], 1 Somber Smithing Stone [6], 1 Somber Smithing Stone [7], 1 Somber Smithing Stone [8], 1 Somber Smithing Stone [9], 1 Somber Ancient Dragon Smithing Stone.

Where to find Rivers of Blood

Source not yet traced: the game files we read don't say yet how to get this item.

Patch history 2

Every patch that changed its numbers, read from the game's balance file (regulation) of each version.

  1. 1.03.1from 1.02.1
    • Physical guard negation47→36
    • Magic guard negation31→26
    • Lightning guard negation31→26
    • Holy guard negation31→26
  2. 1.12.1from 1.10
      Every changed value (1)
      ValueBeforetoAfterChange
      Health, stamina and weight 1
      Weapon Regain HP Amount4060+20+50%

    Other katanas with similar AR

    Overview

    Class
    Katana
    Weight
    6.5
    Requires
    Str 12 · Dex 18 · Arc 20
    Affinities
    Standard
    Game ID
    9040000