Vaal Power SiphonVaal, Attack, Projectile Level: (1-20) Souls Per Use: 15 Can Store 2 Use(s) Soul Gain Prevention: 4 sec Attack Damage: (150-184)% of base Effectiveness of Added Damage: (150-184)%Requires Level 12Fires your wand simultaneously at all nearby enemies, culling those close to death and granting you a power charge for each. Cannot be supported by Volley.Deals (150-184.2)% of Base Damage Gain a Power Charge when Projectile Hits a Rare or Unique Enemy +10% to Critical Strike Multiplier per Power Charge 20% increased Critical Strike Chance per Power Charge Fires 0 Projectile Can't be Evaded Culling StrikePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Vaal Power Siphon fires one projectile at each enemy, meaning that if 20 enemies are present, adding Lesser Multiple Projectiles will cause 60 total projectiles to be fired. However each set of projectiles is able only to hit the enemy it targeted, and only with a single projectile. This means that additional projectiles created by support gems such as Lesser Multiple Projectiles SupportLesser Multiple Projectiles SupportSupport, Projectile Icon: l Level: (1-20) Cost & Reservation Multiplier: 130%Requires Level 8Supports projectile skills.Supported Skills deal (15-6)% less Projectile Damage Supported Skills fire 2 additional Projectiles
Additional Effects From 1-20% Quality: Supported Skills deal (0.5-10)% increased Projectile DamageThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket. or Greater Multiple Projectiles SupportGreater Multiple Projectiles SupportSupport, Projectile Icon: P Level: (1-20) Cost & Reservation Multiplier: 150%Requires Level 38Supports projectile skills.Supported Skills deal (35-26)% less Projectile Damage Supported Skills fire 4 additional Projectiles
Additional Effects From 1-20% Quality: Supported Skills deal (0.5-10)% increased Projectile DamageThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket. do not have any effect despite reducing damage. Other support gems, such as Chain SupportChain SupportSupport, Chaining, Projectile Icon: c Level: (1-20) Cost & Reservation Multiplier: 150%Requires Level 38Supports projectile skills, and any other skills that chain.Supported Skills Chain +2 times Supported Skills deal (30-11)% less Damage with Hits
Additional Effects From 1-20% Quality: Supported Skills have (0.5-10)% increased Chaining rangeThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket., do result in each projectile being able to hit more than one target.
In terms of the range meant by "nearby" enemies, Vaal Power Siphon will target at least all enemies onscreen. This is an AoE calculation, so projectile speed does not affect the effective range.[1]
Gem level progression
Level
Damage Effectiveness
Attack Damage
Exp.
Total Exp.
1
12
33
150%
150%
0
0
2
15
39
152%
151.8%
15249
15249
3
19
48
154%
153.6%
41517
56766
4
23
56
155%
155.4%
81983
138749
5
27
64
157%
157.2%
147968
286717
6
31
73
159%
159%
250557
537274
7
35
81
161%
160.8%
405086
942360
8
38
88
163%
162.6%
447718
1390078
9
41
94
164%
164.4%
615318
2005396
10
44
100
166%
166.2%
834639
2840035
11
47
106
168%
168%
1570760
4410795
12
50
113
170%
169.8%
1633987
6044782
13
53
119
172%
171.6%
2151030
8195812
14
56
125
173%
173.4%
2812189
11008001
15
59
132
175%
175.2%
5099360
16107361
16
62
138
177%
177%
9400731
25508092
17
64
142
179%
178.8%
15273366
40781458
18
66
146
181%
180.6%
26286582
67068040
19
68
151
182%
182.4%
62890590
129958630
20
70
155
184%
184.2%
212046017
342004647
21
72
159
186%
186%
N/A
N/A
22
74
N/A
188%
187.8%
N/A
N/A
23
76
N/A
190%
189.6%
N/A
N/A
24
78
N/A
191%
191.4%
N/A
N/A
25
80
N/A
193%
193.2%
N/A
N/A
26
82
N/A
195%
195%
N/A
N/A
27
84
N/A
197%
196.8%
N/A
N/A
28
86
N/A
199%
198.6%
N/A
N/A
29
88
N/A
200%
200.4%
N/A
N/A
30
90
N/A
202%
202.2%
N/A
N/A
31
91
N/A
203%
203.1%
N/A
N/A
32
92
N/A
204%
204%
N/A
N/A
33
93
N/A
205%
204.9%
N/A
N/A
34
94
N/A
206%
205.8%
N/A
N/A
35
95
N/A
207%
206.7%
N/A
N/A
36
96
N/A
208%
207.6%
N/A
N/A
37
97
N/A
209%
208.5%
N/A
N/A
38
98
N/A
209%
209.4%
N/A
N/A
39
99
N/A
210%
210.3%
N/A
N/A
40
100
N/A
211%
211.2%
N/A
N/A
Item acquisition
Vaal Power Siphon has restrictions on where or how it can drop.
Vaal Power Siphon can drop from the Vaal Vessels found in Vaal side areas.
Recipes
Vaal Power Siphon can be created from the following recipes:
Amount
Part
Description
Meta
9
Volatile PowerVolatile Power9Vaal Gem Quality:+20% CorruptedUnlimited power is apt to corrupt the minds of those who possess it.
Random corruptedVaal gem with 20% quality
A
1
The VoidThe Void1Reach into the Void and claim your prize.
Vaal Skill soul counts were initially balanced for Merciless difficulty, where there are more monsters. We want them to be easier to use in Normal and Cruel difficulty. We have halved the number of souls required for each skill. In Cruel difficulty, skills require 50% more souls to uses. In Merciless difficulty, they require 100% more (which is the same as before the patch).
Lesser Multiple Projectiles SupportLesser Multiple Projectiles SupportSupport, Projectile
or 
Greater Multiple Projectiles SupportGreater Multiple Projectiles SupportSupport, Projectile
do not have any effect despite reducing damage. Other support gems, such as 
Chain SupportChain SupportSupport, Chaining, Projectile
, do result in each projectile being able to hit more than one target.
Volatile Power
Volatile Power
9Vaal Gem
The Void
1Reach into the Void and claim your prize.