I

High-Velocity Rounds

Good item so you can deny something on lane, you can sell it later for extra slot

II

Active

Guardian Ward

For support role (when cast on your mate, cooldown is reduced by half)

I

Imbue

Mystic Expansion

Its easier to stun enemy heroes with more range, right?

I

Extra Charge

Use your 1st to clear waves faster or do more dmg

I

Extra Stamina

2 stamina = pain

II

Arcane Surge

Great item, use it more for the ability buffs

II

Active

Slowing Hex

Use it to stun enemy heroes with your 3rd

IV

Active

Vortex Web

This is where the fun begins, use it with your 3rd

III

Rapid Recharge

Extra charge for your 1st

III

Tankbuster

Awesome item for dmg

III

Active

Cultist Sacrifice

Great buffs, you can buy this before vortex web or after

III

Trophy Collector

Could be used over Cultist Sacrifice, if you want more ms and passive souls (buy this before vortex web, cause you want stacks as early as possible)

II

Healbane

Good early anti-heal

IV

Spirit Burn

Great anti-heal + bonus dmg

IV

Transcendent Cooldown

For Vortex Web cooldown

IV

Imbue

Active

Echo Shard

More stuns, more fun

IV

Escalating Exposure

More dmg from your Vortex Combo

IV

Boundless Spirit

Last priority, good spirit buff

IV

Active

Divine Barrier

For support role, you can buy it whenever you need this

III

Greater Expansion

If you need more range for your 3rd

IV

Active

Refresher

For your ult, support role

IV

Lightning Scroll

Buy this with refresher

III

Counterspell

In right hands you can dodge everything (almost) )

III

Active

Dispel Magic

Against heroes such as Infernus, Bebop, Shiv

I

Rebuttal

Against melee heroes on lane

III

Stamina Mastery

Good for movement

III

Active

Silence Wave

Early 'curse'

III

Active

Knockdown

Can use it with your 3rd

III

Active

Decay

Take if enemy have tanky heroes

III

Active

Alchemical Fire

Can be used with your vortex combo

IV

Active

Cursed Relic

Against annoying heroes such as Lash, Dynamo, Haze

IV

Active

Scourge

For your front heroes