KatanaChanged in 3 patchesVerified for build 25827938

Serpentbone Blade

With its requirements met (Str 11 · Dex 22), Serpentbone Blade reaches 401 attack rating at +25.

Show all 4 on the map →

Pickup Volcano Manor
Gift: Tanith, Volcano Manor Proprietress Volcano Manor
Requires all of: Rykard, Lord of Blasphemy; Rileigh the Idle Volcano Manor, Mt. Gelmir

Attack rating (+25): 401
Scaling (+25): Str E · Dex B
Class: Katana
Weight: 6
Requires: Str 11 · Dex 22
Skill: Double Slash · FP 3
Passive: Causes poison buildup (66)
Upgrades with: Smithing Stones (+25)

In-game description

Sinister katana modeled after a serpent bone.

The densely packed row of spines that jut away from the cutting edge are coated in a lethal poison.

Attack rating by affinity 1

At Str 11 · Dex 22 · Int 10 · Fai 10 · Arc 10 (each stat at the weapon's requirement, 10 where it has none), one-handed.

Affinity	+0	Max	Damage at max	Scaling at max
Standard	149	401 +25	Physical 401	Str EDex BInt –Fai –Arc –

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

Attack rating by stat (Standard, +25)

Dexterity
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 level	Dexterity	Strength
11	–	401
14	–	403
17	–	405
20	–	407
22	401	–
23	–	409
25	415	–
26	–	411
28	428	–
29	–	413
31	441	–
32	–	414
34	454	–
35	–	416
37	467	–
38	–	418
40	480	–
41	–	419
43	492	–
44	–	421
46	503	–
47	–	423
49	514	–
50	–	424
52	525	–
53	–	425
55	535	–
56	–	427
58	543	–
59	–	428
61	550	–
62	–	429
64	557	–
65	–	430
67	565	–
68	–	431
70	572	–
71	–	432
73	580	–
74	–	433
76	587	–
77	–	434
79	595	–
80	–	435
82	599	–
83	–	435
85	602	–
86	–	435
88	605	–
89	–	436
91	607	–
92	–	436
94	610	–
95	–	436
97	613	–
98	–	437
99	615	437

Stat	Soft caps	AR per point, by stretch	At 99
Dexterity	60, 80	22–60: +3.84 · 60–80: +2.5 · 80–99: +0.95	615 from 401
Strength	18, 60, 80	11–18: +0.71 · 18–60: +0.52 · 60–80: +0.35 · 80–99: +0.11	437 from 401

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

At the weapon's requirements (Standard).

Show the numbers

Upgrade level	Attack rating
0	149
1	158
2	167
3	177
4	186
5	196
6	205
7	215
8	225
9	235
10	244
11	254
12	264
13	274
14	285
15	295
16	305
17	315
18	326
19	336
20	347
21	358
22	368
23	379
24	390
25	401

Poison 66 per hit at every upgrade level (Standard).

#7 of 10 katana weapons by attack rating

Star-Lined Sword539 +10
Hand of Malenia539 +10
Moonveil538 +10
Rivers of Blood512 +10
Sword of Night471 +10
Serpentbone Blade401 +25
Nagakiba388 +25
Dragonscale Blade372 +10
Uchigatana347 +25

Standard affinity at max upgrade, each weapon at its own requirements. A full bar is the class's strongest (Meteoric Ore Blade, 550).

Moveset the game's own

Damage with Standard +25 at the stats above, before the enemy's defense; two-handed moves include two-handing's Strength bonus. MV (motion value) is the hit's share of attack rating (100 = all of it).

One-handed16players can parry them

Move	MV	Damage	Stance	Stamina	1st hit
R1 1Slash	100	401	5	12.5	0.43 s
R1 2Slash	101	405	5	12.5	0.47 s
R1 3Slash	102	409	5	12.5	0.43 s
R1 4Slash	103	413	5	12.5	0.43 s
R1 5Slash	110	441	10	12.5	0.57 s
R2Slash · 2 hits	50 + 110	641	10	25	—
Charged R2Slash · 2 hits	50 + 140	762	30	37.4	1.27 s
R2 2Slash · 2 hits	50 + 110	641	10	25	—
Charged R2 2Slash · 2 hits	50 + 140	762	30	37.4	1.10 s
Running R1Slash	105	421	5	15.6	0.50 s
Running R2Pierce	120	481	10	20.8	0.63 s
Rolling R1Slash	90	361	5	10.4	0.37 s
Backstep R1Slash	95	381	5	10.4	0.53 s
Jumping R1Slash	110	441	7.5	10.4	0.40 s
Jumping R2Slash	130	521	20	20.8	0.47 s
Guard counterSlash	140	561	30	12.5	0.73 s

Two-handed16players can parry them

Move	MV	Damage	Stance	Stamina	1st hit
R1 1Slash	103	417	6.5	13.5	0.47 s
R1 2Slash	104	421	6.5	13.5	0.50 s
R1 3Slash	105	425	6.5	13.5	0.43 s
R1 4Slash	106	429	6.5	13.5	0.43 s
R1 5Slash	113	457	13	13.5	0.57 s
R2Slash · 2 hits	55 + 120	708	11	29.1	—
Charged R2Slash · 2 hits	55 + 150	830	33	41.6	1.27 s
R2 2Slash · 2 hits	55 + 120	708	11	29.1	—
Charged R2 2Slash · 2 hits	55 + 150	830	33	41.6	1.10 s
Running R1Slash	110	445	6.5	18.7	0.63 s
Running R2Pierce	125	506	11	25	0.67 s
Rolling R1Slash	95	384	6.5	12.5	0.40 s
Backstep R1Slash	100	404	6.5	12.5	0.53 s
Jumping R1Slash	115	465	9.8	12.5	0.40 s
Jumping R2Slash	135	546	22	25	0.47 s
Guard counterSlash	145	587	33	13.5	0.73 s

Criticals2

Move	MV	Damage	Stance	Stamina	1st hit
BackstabPierce	230	922	0	17.7	0.50 s
RipostePierce	345	1,384	0	17.7	0.83 s

Skill: Double Slash3move names inferred

Move	MV	Damage	Stance	Stamina	1st hit
SkillSlash · 2 hits	92 + 105	790	8.8	29.1	0.63 s
Skill follow-upSlash · 3 hits	84 + 86 + 115	1,143	12.5	43.7	0.40 s
Skill follow-up 2Slash	145	581	10	20.8	0.70 s

From the player's animation events, BehaviorParam_PC and AtkParam_Pc. First hit: seconds at normal speed from the start of the move's animation (uncharged R2s start from a released charge, so they show —). Criticals include the weapon's critical multiplier. * The elemental motion value differs from the physical one shown; the damage uses each.

By upgrade level (Standard)

Level	AR	Physical	Cost
+0	149	149	—
+1	158	158	Smithing Stone [1] × 2
+2	167	167	Smithing Stone [1] × 4
+3	177	177	Smithing Stone [1] × 6
+4	186	186	Smithing Stone [2] × 2
+5	196	196	Smithing Stone [2] × 4
+6	205	205	Smithing Stone [2] × 6
+7	215	215	Smithing Stone [3] × 2
+8	225	225	Smithing Stone [3] × 4
+9	235	235	Smithing Stone [3] × 6
+10	244	244	Smithing Stone [4] × 2
+11	254	254	Smithing Stone [4] × 4
+12	264	264	Smithing Stone [4] × 6
+13	274	274	Smithing Stone [5] × 2
+14	285	285	Smithing Stone [5] × 4
+15	295	295	Smithing Stone [5] × 6
+16	305	305	Smithing Stone [6] × 2
+17	315	315	Smithing Stone [6] × 4
+18	326	326	Smithing Stone [6] × 6
+19	336	336	Smithing Stone [7] × 2
+20	347	347	Smithing Stone [7] × 4
+21	358	358	Smithing Stone [7] × 6
+22	368	368	Smithing Stone [8] × 2
+23	379	379	Smithing Stone [8] × 4
+24	390	390	Smithing Stone [8] × 6
+25	401	401	Ancient Dragon Smithing Stone × 1

From +0 to +25: 12 Smithing Stone [1], 12 Smithing Stone [2], 12 Smithing Stone [3], 12 Smithing Stone [4], 12 Smithing Stone [5], 12 Smithing Stone [6], 12 Smithing Stone [7], 12 Smithing Stone [8], 1 Ancient Dragon Smithing Stone.

Where to find Serpentbone Blade

Rewards

Requires all of: Rykard, Lord of Blasphemy; Rileigh the Idle · Rykard, Lord of Blasphemy · Volcano Manor Map2

Patch history 3

Every patch that changed its numbers, version by version.

1.04.1from 1.03.3
Every changed value (1)
Value Before to After Change
Defence and poise 1
Guard Stamina Multiplier×3 variants 0 1 +1
1.09from 1.08.1
- Passive effect 1107,500→6,510
- Passive effect 26,510→107,500
1.12.1from 1.10
Every changed value (1)
Value Before to After Change
Health, stamina and weight 1
Weapon Regain HP Amount 40 60 +20+50%

Value	Before	to	After	Change
Defence and poise 1
Guard Stamina Multiplier×3 variants	0	→	1	+1

Value	Before	to	After	Change
Health, stamina and weight 1
Weapon Regain HP Amount	40	→	60	+20+50%

Other katanas with similar AR

Overview

Class: Katana
Weight: 6
Requires: Str 11 · Dex 22
Affinities: Standard
Game ID: 9080000