Warlock stats, abilities and strategy
Summons powerful demons to fight at his side
Summoning forth his demonic golem, Warlock brings ruin to enemies and destroys their defenses. Yet even without his golem, his dark spells can still wreak havoc, whether healing allies and harming enemies with a word, or binding foes together to share their agony.
Win Rate 51.2%
Pick Rate 9.0%
Attributes
604 +52.8/lvl
375 +37.2/lvl
22 +2.4/lvl
10 +1.0/lvl
25 +3.1/lvl
Stats
Damage:
52 - 62 + 3.1/level (155 - 165 at level 30)
Range:
600
Armor:
2.7 + 0.2/level (9.8 at level 30)
Movement:
300
Roles
Carry
Durable
Nuker
Pusher
Support
Escape
Disabler
Initiator
Facets
Champion of Gorroth
Win Rate: 51.7%
Pick Rate: 70.0%
Chaotic Offering Golems deal more burn damage based on Warlock's health and mana regeneration.
Black Grimoire
Win Rate: 50.2%
Pick Rate: 30.0%
Grants Warlock the item Black Grimoire, which can be consumed to gain experience for each kill Warlock participated in. Starts with 1 charge.
Abilities
ABILITY: Passive
DAMAGE TYPE: Magical
PIERCES DEBUFF IMMUNITY: No
DISPELLABLE: Yes
Whenever an enemy unit dies while afflicted by one or more of Warlock's abilities, a minor imp is summoned that lasts for 15 seconds and explodes on death. Imps will automatically seek out nearby units, favoring fatally bonded heroes, and will explode when reaching their prey.
Minor imps have 50 / 130 / 210 / 290 / 370 health and explode for 25 / 70 / 115 / 160 / 205 damage in a 400 radius.
Minor imps do not explode if killed by enemy heroes.
Fatal Bonds
AFFECTS: Unit
PIERCES DEBUFF IMMUNITY: No
PASSIVE: No
DISPELLABLE: Yes
DEBUFF: Yes
Binds several enemy units together, causing a percentage of the damage dealt to one of them to be felt by the others.
The shared damage type is the same as the type of damage inflicted.
ENEMIES BOUND: 6
SHARED DAMAGE: 15% / 18% / 21% / 24%
DURATION: 18
42 / 34 / 26 / 18
120 / 130 / 140 / 150
1000
LEVEL 10 TALENT: +4% Fatal Bonds Damage
Patch 7.39
- No longer applies to enemies in Fog of War (once applied, damage still hits enemies in FoW)
An ancient incantation that links the vital energies of multiple lifeforms into one collective body.
Shadow Word
AFFECTS: Unit
DAMAGE TYPE: Magical
PIERCES DEBUFF IMMUNITY: No
PASSIVE: No
DISPELLABLE: Yes
BUFF: Yes
DEBUFF: Yes
Warlock whispers an incantation, casting a spell on a unit that makes it deal damage to nearby enemy units and heal nearby ally units. Target Unit will also heal or be damaged depending on whether they are ally or enemy.
HEAL/DAMAGE: 15 / 25 / 35 / 45
DURATION: 10
EFFECT RADIUS: 225
15 / 14 / 13 / 12
110 / 120 / 130 / 140
650 / 700 / 750 / 800
LEVEL 15 TALENT: +150 Shadow Word AoE
Patch 7.39
- Effect Radius decreased from 300 to 225
Demnok's arcane arts have a myriad of uses, allowing them to be powerful friendly enchantments or damaging curses.
Upheaval
AFFECTS: Area
DAMAGE TYPE: Magical
PIERCES DEBUFF IMMUNITY: No
PASSIVE: No
DISPELLABLE: Yes
CHANNELED - A powerful slowing and damaging current that grows stronger as it's channeled. Lasts up to NaN seconds. Enemies are slowed for 1 second after leaving the area or the spell ends.
The slow increase is based on length of the channel, not the duration an enemy was standing in the area.
RADIUS: 575 / 600 / 625 / 650
SLOW PER SECOND: 11% / 14% / 17% / 20%
MAX SLOW: 55% / 70% / 85% / 100%
DAMAGE PER SECOND: 10
MAX DAMAGE: 35 / 60 / 85 / 110
60 / 50 / 40 / 30
100
800
Aghanim's Shard
While channeling, Warlock spawns a minor imp every 2 seconds that lasts for 15 seconds and explodes dealing damage to all enemies around them upon death.
LEVEL 20 TALENT: +40 Upheaval Damage
LEVEL 10 TALENT: +50 Upheaval Radius
Demnok manipulates space-time, impairing entire armies.
Chaotic Offering
AFFECTS: Area
PIERCES DEBUFF IMMUNITY: Yes
PASSIVE: No
DISPELLABLE: Strong Dispels Only
Summons a Golem from the depths, stunning enemies for 0.8 seconds. The Golem lives 60 seconds, takes reduced damage from spells, has increased Slow Resistance, has Permanent Immolation and Flaming Fists on attack.
This ability destroys trees in its area of effect.
SUMMON BLAST RADIUS: 600
GOLEM HEALTH: 1500 / 2250 / 3000
GOLEM DAMAGE: 100 / 150 / 200
GOLEM MOVEMENT SPEED: 320 / 340 / 360
GOLEM HEALTH REGEN: 25 / 50 / 75
GOLEM GOLD BOUNTY: 100 / 150 / 200
GOLEM ARMOR: 8 / 12 / 14
GOLEM SLOW RESISTANCE: 60%
160
200 / 400 / 600
900
FACET: Champion of Gorroth
Chaotic Offering Golems deal more burn damage based on Warlock's health and mana regeneration.
Aghanim's Scepter
Calls 2 Golems.
LEVEL 25 TALENT: 80% Magic Resistance for Chaotic Offering Golems
LEVEL 25 TALENT: +20 Chaotic Offering Golems Armor
Patch 7.39b
- Golem's Permanent Immolation is now affected by Warlock's AoE increases
Demnok unleashes the captive spirit in his Dreadwood staff, causing destruction in enemy ranks.
Talents
80% Magic Resistance for Chaotic Offering Golems
+ 0.1%
+20 Chaotic Offering Golems Armor
+40 Upheaval Damage
Summons a Golem on death
+ 1.8%
+150 Shadow Word AoE
+10 Upheaval Attack Speed per second on Allies
+ 1.3%
+50 Upheaval Radius
+ 0.5%
+4% Fatal Bonds Damage
Win Rate
Pick Rate
Strategy
Prioritize using Shadow Word for healing instead for damage due to magic resistance. You can heal yourself and your laning partner at the same time in the 225 AoE of Shadow Word.
Fatal Bonds does not latch onto fogged units. However, if you latch Fatal Bonds onto a target, they will still take damage even if they run into fog.
Use Fatal Bonds to harass if you can link four lane creeps and multiple enemy heroes on the lane.
Chaotic Offering destroys trees upon landing.
Be active when Chaotic Offering is up, organize 
Smoke of Deceit and farm with golem after the fight.
Pick up 
Aghanim's Shard around minute 15 as it improves your wave clear and damage significantly.
Once you have
Aghanim's Shard, you can use Upheavel to farm creep waves and jungle camps from a distance.
Make sure to keep the pull camps unblocked to bring back the lane creeps closer to your tower as Fatal Bonds will constantly push them out.
Counter Strategy
Warlock's Chaotic Offering has long cooldown. Look to fight when it is down.
Avoid clumping up and fighting in choke spots against Warlock's spells.
Most of Warlock's damage comes from Fatal Bonds. Dispel items are great at removing them.
Debuff immunity is great against Warlock's spells. However, Chaotic Offering will still stun you through 
Black King Bar
Be aware of Warlock's 
Aghanim's Scepter and 
Refresher Orb timings. He can carry the game.