Arcane Boots

A core Boots upgrade to have some much needed mana sustain to spam your spells for fighting and farming. Goes well with the Plague Carrier facet to constantly spam Plague Wards on yourself. Gets upgraded to Guardian Greaves later in the game.

Orchid Malevolence

A core item to silence and kill elusive enemy heroes with your burst damage through Plague Wards and Noxious Plague while they cannot use spells to get away or fight back. Gets upgraded to Bloodthorn later in the game.

Blink Dagger

A core mobility item to quickly close the gap on enemy heroes and burst them down with your Plague Wards and Noxious Plague. Also lets you dodge certain initiations like Chronosphere and Berserkers Call.

Bloodthorn

An upgrade for Orchid to instantly silence an elusive enemy hero and hit them with your hero and Plague Wards to burst them down while they cannot use their spells to get away. Has great synergy with Aghanim's Scepter to do massive damage with Soul Rend.

Aghanim's Scepter

With the Plague Carrier facet, you can buy this item right after support items like Solar Crest and Guardian Greaves to output massive damage through your right clicks and Plague Wards.

Aghanim's Shard

A core item to damage and stun enemy heroes who dispel Venomous Gale with Lotus Orb, BKB, or another debuff immunity spell.

Scythe of Vyse

A late game pick up that gives you instant lockdown against elusive enemy heroes to burst them down with all your spells. Also increases your damage through stats and provides mana regen to spam spells.

Black King Bar

A core item to avoid most disables and silences on the enemy team to use all your spells, spam Plague Wards, and stay in the front line while hitting freely in fights. Also improves your right click damage and tankiness through HP pool and magic resistance.

Glimmer Cape

A core defensive item to provide a magic damage barrier and invisibility to yourself or an allied hero to survive when in trouble. Works well against heavy magic damage lineups.

Magic Stick

Helps you sustain HP and mana as Venomancer frequently uses his spells to harass, set up kills, and farm with Plague Wards.

Ring of Regen

Gives you HP sustain to stay in the lane and not get zoned by Venomancer's constant damage from spells and right clicks.

Headdress

Gives HP sustain to you and your ally to stay in the lane and not get zoned by Venomancer's constant damage from spells and right clicks.

Wind Lace

Gives you movement speed to kite or close the gap on Venomancer. Also counters the movement slow from Venomous Gale, Poison Sting, and Noxious Plague.

Boots of Speed

Gives you movement speed to kite or close the gap on Venomancer. Also counters the movement slow from Venomous Gale, Poison Sting, and Noxious Plague.

Cloak

Gives you magic resistance to significantly reduce the damage taken from Venomancer's magic heavy toolkit.

Ring of Health

Gives you HP sustain to stay in the lane and not get zoned by Venomancer's constant damage from spells and right clicks.

Tranquil Boots

Gives you HP regen that does not get reduced by Venomancer's constant damage from spells. Also gives you more movement speed to counter the slow from Venomous Gale, Poison Sting, and Noxious Plague.

Lotus Orb

Lets you dispel Venomous Gale and Poison Sting off yourself or an ally. Also lets you reflect Noxious Plague back onto Venomancer.

Eul's Scepter of Divinity

Gives you a dispel against Venomous Gale and Poison Sting. Also lets you dodge the Noxious Plague projectile with a timely Cyclone on yourself.

Mage Slayer

Provides magic resistance and reduces the damage dealt by Venomancer from all his spells to nullify his burst potential.

Pipe of Insight

Gives you and your team magic resistance and barrier to significantly reduce the damage taken from Venomancer's magic heavy toolkit.

Eternal Shroud

Gives you magic resistance to significantly reduce the damage taken from Venomancer's magic heavy toolkit.

Black King Bar

Gives you debuff immunity and magic resistance to avoid the slow from Venomancer's spells as well as reduce the damage taken from his magic heavy toolkit.

Manta Style

Gives you a dispel against Venomous Gale and Poison Sting. The illusions can also help tank the Noxious Plague damage and control.

Glimmer Cape

Gives you magic resistance and barrier to significantly reduce the damage taken from Venomancer's magic heavy toolkit as well as save yourself or an ally slowed by his spells.

Force Staff

Gives you a repositioning tool to close the gap on Venomancer or push yourself or an ally to safety when affected by his spells.

Satanic

Gives you a dispel against Venomous Gale and Poison Sting as well as use the massive lifesteal to gain back your HP lost to Venomancer's spells.