Power Siphon

Power SiphonAttack, Projectile
Mana Cost: (7-11)
Soul Gain Prevention: 0.001 sec
Cast Time: 1.00 sec
Effectiveness of Added Damage: (140%-159%)Requires Level 12Fires your wand to unleash projectiles that fire toward enemies in front of you or to your sides, dealing increased damage and granting you a power charge if an enemy is killed by, or soon after, the hit.Per 1% Quality:1Superior2Anomalous3Divergent1% increased DamageFires an additional Projectile+1% to Damage over Time Multiplier for Ailments from Critical StrikesDeals (140-159)% of Base Attack Damage
Fires (4-7) additional Projectiles
20% chance to 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
Culling StrikePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.Acquisition
Level: 12Purchase Costs

Normal

1x Orb of Transmutation

Sell Price
1x Scroll FragmentMiscellaneous
Item class: Active Skill Gems
Metadata ID: Metadata/Items/Gems/SkillGemPowerSiphon

For the Vaal-themed counterpart, see Vaal Power Siphon.

Power Siphon is an attack skill. This wand skill fires a volley of projectiles that are are both empowered by and generate power charges. Projectiles also have Culling Strike.

Skill functions and interactions

This skill interacts heavily with power charges, benefiting from them more than your average skill while also generating them. Projectiles fired by this skill have a chance to generate power charges on hit against rare or unique enemies. The skill also applies a very brief debuff to all enemies hit that will grant you a power charge if they die. The duration is notably so short that by the time your second attack reaches them it will have expired. The amount of power charges you can gain from this debuff is limited to one per attack, with no exception.

The skill also receives a 10% increase to its critical strike multiplier and 20% increased critical strike chance for each power charge you have. Additionally this skill has culling strike, causing it to instantly kill enemies that had 10% or less life before being hit as well as enemies reduced to that threshold from the hit. This means that a hit that would normally deal 93% of an enemies total life would instead kill them. When dual wielding wands, Power Siphon will alternate between firing each weapon.

Gem level progression

Level			Mana Cost	Damage Effectiveness	Damage Multiplier	Projectiles	Exp.	Total Exp.
1	12	33	7	140%	140%	4	0	0
2	15	39	7	141%	141%	4	15,249	15,249
3	19	48	7	142%	142%	4	41,517	56,766
4	23	56	8	143%	143%	4	81,983	138,749
5	27	64	8	144%	144%	4	147,968	286,717
6	31	73	8	145%	145%	5	250,557	537,274
7	35	81	8	146%	146%	5	405,086	942,360
8	38	88	8	147%	147%	5	447,718	1,390,078
9	41	94	9	148%	148%	5	615,318	2,005,396
10	44	100	9	149%	149%	5	834,639	2,840,035
11	47	106	9	150%	150%	6	1,570,760	4,410,795
12	50	113	9	151%	151%	6	1,633,987	6,044,782
13	53	119	9	152%	152%	6	2,151,030	8,195,812
14	56	125	10	153%	153%	6	2,812,189	11,008,001
15	59	132	10	154%	154%	6	5,099,360	16,107,361
16	62	138	10	155%	155%	7	9,400,731	25,508,092
17	64	142	10	156%	156%	7	15,273,366	40,781,458
18	66	146	10	157%	157%	7	26,286,582	67,068,040
19	68	151	11	158%	158%	7	62,890,590	129,958,630
20	70	155	11	159%	159%	7	212,046,017	342,004,647
21	72	159	11	160%	160%	8	N/A	N/A
22	74	N/A	11	161%	161%	8	N/A	N/A
23	76	N/A	11	162%	162%	8	N/A	N/A
24	78	N/A	11	163%	163%	8	N/A	N/A
25	80	N/A	11	164%	164%	8	N/A	N/A
26	82	N/A	12	165%	165%	9	N/A	N/A
27	84	N/A	12	166%	166%	9	N/A	N/A
28	86	N/A	12	167%	167%	9	N/A	N/A
29	88	N/A	12	168%	168%	9	N/A	N/A
30	90	N/A	12	169%	169%	9	N/A	N/A
31	91	N/A	12	170%	169.5%	10	N/A	N/A
32	92	N/A	13	170%	170%	10	N/A	N/A
33	93	N/A	13	171%	170.5%	10	N/A	N/A
34	94	N/A	13	171%	171%	10	N/A	N/A
35	95	N/A	13	172%	171.5%	10	N/A	N/A
36	96	N/A	13	172%	172%	11	N/A	N/A
37	97	N/A	13	173%	172.5%	11	N/A	N/A
38	98	N/A	13	173%	173%	11	N/A	N/A
39	99	N/A	13	174%	173.5%	11	N/A	N/A
40	100	N/A	13	174%	174%	11	N/A	N/A

Item acquisition

Upgrade paths

This item can be acquired through the following upgrade paths or vendor recipes:

Amount	Ingredient	General Notes	Type
6	The FoxThe Fox6Level 20 Gem"Masters of wit, strength and cunning. To survive the harsh winters, you must be like the fox." - Ezomyte Proverb	random level 20 gem	Automatic
3	Gemcutter's PromiseGemcutter's Promise3Superior Gem Quality: +20%"I swore to use my position to help the people. What good is power when it just accumulates on the already-powerful?" - Erasmus, Imperial Gemcutter	random superior gem (Q20)	Automatic

Vendor reward

This item can be bought at the listed NPC vendors, after completing the following quests:

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
The Siren's Cadence Act 1 Nessa	✓	✓	✗	✗	✗	✗	✓
A Fixture of Fate Act 3 Siosa	✓
Fallen from Grace Act 6 Lilly Roth	✓

Related helmet enchantments

The following helmet enchantments affect Power Siphon.

Name		Stats	Spawn Weighting
Enchantment Power Siphon Additional Projectiles 1	66	Power Siphon fires an additional Projectile	helmet 75 default 0
Enchantment Power Siphon Additional Projectiles 2	75	Power Siphon fires 2 additional Projectiles	helmet 75 default 0
Enchantment Power Siphon Attack Speed 1	66	10% increased Power Siphon Attack Speed	helmet 75 default 0
Enchantment Power Siphon Attack Speed 2	75	15% increased Power Siphon Attack Speed	helmet 75 default 0
Enchantment Power Siphon Damage 1	66	25% increased Power Siphon Damage	helmet 75 default 0
Enchantment Power Siphon Damage 2	75	40% increased Power Siphon Damage	helmet 75 default 0
Enchantment Power Siphon Percent Chance To Gain Power Charge On Kill 1	66	30% Chance to gain an additional Power Charge on Kill with Power Siphon	helmet 75 default 0
Enchantment Power Siphon Percent Chance To Gain Power Charge On Kill 2	75	45% Chance to gain an additional Power Charge on Kill with Power Siphon	helmet 75 default 0

Alternate skill effects

Power Siphon has the following alternate skill effects:

Item	Effect(s)
Celestial Power Siphon EffectCelestial Power Siphon EffectSkill Gem EffectYour Power Siphon becomes a celestial effect.	Your Power Siphon becomes a celestial effect.

Version history

Version	Changes
3.10.0	Now deals base damage and has an added damage effectiveness of 140% at gem level 1 (from 125%), up to 159% at gem level 20 (from 150%).
3.3.0	Now has an added damage effectiveness and base damage of 125% at gem level 1 (down from 130%), up to 150.7% at gem level 20 (down from 160.4%). Now has a mana cost of 7 at gem level 1 (down from 13), up to 11 at gem level 20 (down from 15). "Now has 20% increased critical strike chance per power charge. " "Now has +10% to critical strike multiplier per power charge. " Now has 20% chance to gain a power charge when you hit a rare or unique enemy. Now fires 4 additional projectiles at gem level 1, up to 7 at gem level 20. Now automatically targets enemies in front of you. Each projectile will target a different enemy.
2.1.0	Power Siphon has had its base damage increased by a flat 5% at all levels.
2.0.0	Now grants 1% increased damage per 1% quality (was 0.75% per 1%).
1.2.0	Mana cost has been reduced
1.1.0b	Fixed a bug where the Templar's Power Siphon was not working correctly.
0.9.13h	Fixed a bug with the graphical effect.
0.9.12qq	Damage modifiers factored into Damage Effectiveness rather than being listed as separate stats.
0.9.12e	Fixed a client and server crash related to Power Siphon.
0.9.12	Fixed a bug where you could get two Power Charges from one monster if your Attack Speed was fast enough.
0.9.9	Fixed a bug where Power Siphon could not break barrels.
0.9.7d	Power Siphon now works on shattered enemies correctly.
0.9.7	Power Siphon now acts like Infernal Blow in that it counts kills that occur a short time after the skill is used (so that it's useful in party situations). It also now has the Culling Strike effect. Power Siphon now works correctly with the Multiple Projectiles support gem.
0.9.6	Power Siphon has been added to the game.