Follow the changes.

New Basic Ability

Venomancer summons a Spawn of Aktok to sink its fangs into an enemy, dealing 40/60/80/100 magic damage and applying a deadly toxin which does 20/25/30/35 magical damage per second for 6 seconds. When the target attacks, they take the initial magic damage again. Cast Range: 600. Mana Cost: 70/80/90/100. Cooldown: 20/18/16/14s

Ability reworked

No longer has AoE effect, now affects only the host

Now when the plague spreads, it also carries all debuffs placed by Venomancer

Doesn't stack. Applying plague to an already plague-infected unit will deal projectile damage again, but won't affect the remaining debuff duration. Duration of carried debuffs is fixed and cannot be altered with Status Resistance or Debuff Amplification

Mana Cost decreased from 200/300/400 to 200/250/300

Duration decreased from 5s to 4s

Initial Damage decreased from 200/300/400 to 150/200/250

Initial Damage is now non-lethal

Now spreads a second time, but all spreads after the first one deal no initial damage

Spread Radius decreased from 800 to 700

Max HP as damage decreased from 3/4/5% to 2/3/4%

Now upgraded with Aghanim's Scepter

Decreases cooldown by 35s. Reduces Magic Resistance of affected units by 20% and allows additional spreads to deal initial damage

Level 15 Talent +8% Time Dilation Slow per Cooldown replaced with +125 Time Walk Range

No longer levels with Chronosphere

Now only applies to projectiles targeting Faceless Void or an allied hero within a 1200 radius of him

Max slow distance rescaled from 600 around Faceless Void to 500 around the targeted hero

Enemy attack projectile speed slow rescaled from 35/40/45/50% to 40%

Aghanim's Scepter now also provides Reverse Time Walk sub-ability

Aghanim's Scepter Time Lock attacks will no longer miss if Reverse Time Walk is used too quickly after Time Walk

No longer upgraded with Aghanim's Shard

Duration no longer counts down while under effect of Chronosphere

Now upgraded with Aghanim's Shard

Increases Attack/Movement Slow per cooldown by 5/5%. Provides Faceless Void with bonus movement and attack speed by the same values per each enemy cooldown extended. The bonus degrades over the duration of the buff

9/10/11/12 Attack Speed + the same value per affected cooldown, 9/10/11/12% Movement Speed + the same value per affected cooldown

This buff also doesn't count down under effect of Chronosphere

Now the default ultimate ability

Base Armor decreased by 1

No longer levels with Reincarnation

Lifesteal changed from 10/20/30/40% to 14% + 1% per level

Wraith Duration changed from 3.5/4/4.5/5s to 4.25s + 0.25s per 6 levels

Up to 5.5s at level 30. Also increased by 1s with Aghanim's Scepter

Bonus Attack Speed rescaled from 30/45/60/75 to 55

Bonus Move Speed rescaled from 10/15/20/25% to 20%

Now always a basic ability for Wraith King

Skeleton movespeed increased from 340 to 350

Aghanim's Shard reworked

Critical strikes curse their target, dealing 75% of the damage dealt again after a 3 second delay. Vampiric Spirit's lifesteal applies to the curse damage

Mana Cost decreased from 225 to 220/110/0

Now spawns 2/3/4 per enemy hero within slow radius

No longer upgraded with Aghanim's Shard

Base Armor increased by 1

Level 10 Talent +12% Magic Resistance replaced with +200 Health

Level 10 Talent +30 Attack Speed replaced with +75 Silence AoE

Level 15 Talent +100 Silence AoE replaced with +50 Attack Speed

Level 20 Talent +400 Health replaced with +6 Exorcism Spirits

Level 25 Talent +8 Exorcism Spirits replaced with Deaths During Exorcism Extend Duration by +8s (both allied and enemy heroes count)

Movement speed bonus changed from 0.75% + 0.75% per level up to 0.5% + 0.75% per level

Cooldown Reduction changed from 0.75% + 0.75% per level up to 0.75% per level

Effective values are not changed