Vaal Power Siphon

For the non-Vaal counterpart, see Power Siphon.

Vaal Power Siphon is a vaal projectile attack that fires a single wand projectile at each nearby enemy, granting a power charge for any slain by it.

Skill Functions and Interactions

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.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills have 0.5% increased Attack Speed
Supported Skills have 0.5% increased Cast SpeedSupported Skills have 1% reduced Mana Cost
Supported Skills have 0.5% increased Projectile SpeedProjectiles Fired by Supported Skills have 1% increased Projectile spreadSupported Skills fire 2 additional Projectiles
Supported Skills deal (15-6)% less 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 Active 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.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills deal 0.5% increased Projectile DamageSupported Skills have 1% reduced Mana Cost
Supported Skills have 0.5% increased Projectile SpeedProjectiles Fired by Supported Skills have 1% increased Projectile spreadSupported Skills fire 4 additional Projectiles
Supported Skills deal (35-26)% less 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 Active 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.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills have 1% increased Chaining rangeSupported Skills have 1% increased Projectile SpeedProjectiles Fired by Supported Skills have 4% chance not to Pierce EnemiesSupported Skills Chain +2 times
Supported Skills deal (30-11)% less Damage with HitsThis 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 Active 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.

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

Version History

Version	Changes
3.1.0	Radius has been reduced to 70 units (down from 120).
1.1.0d	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).
1.1.0	Introduced to the game.