I

High-Velocity Rounds

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

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

II

Enchanter's Emblem

Good item that gives you great buffs/resist, you can sell it in late for extra slot

II

Arcane Surge

Great item, gives you extra stamina that is necessary for this hero, 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

Active

Cultist Sacrifice

Great buffs, if you don't have extra slot you can sell high velocity or just skip it

III

Rapid Recharge

Extra charge for your 1st

III

Tankbuster

Awesome item for dmg

III

Trophy Collector

Could be used over Cultist Sacrifice, if you want more ms and passive souls, spell range

II

Healbane

Good early anti-heal

IV

Spirit Burn

Great anti-heal + bonus dmg

IV

Transcendent Cooldown

For Vortex Web cooldown

III

Greater Expansion

You can skip this and buy Echo Shard if you want

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

Refresher

For your ult, support role

IV

Lightning Scroll

Buy this with refresher

IV

Active

Divine Barrier

For support role, against heroes such as Bebop, Pocket

III

Counterspell

In right hands you can dodge everything

III

Active

Debuff Remover

Against heroes such as Infernus, Bebop

IV

Active

Ethereal Shift

Good late item, cause you don't have too much hp

I

Monster Rounds

If you need to clear waves or farm faster

II

Active

Split Shot

Could be used as dmg booster at early game

II

Active

Guardian Ward

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

II

Mystic Slow

Could be good for your 1st

II

Suppressor

Against M1 heroes like Haze, Wraith

III

Active

Knockdown

If you can't stun enemy's with your ult or just don't want to waste it

III

Active

Decay

Take if enemy have tanky heroes

III

Active

Silence Wave

Early 'curse'

IV

Active

Curse

Against annoying heroes such as Lash, Dynamo, Haze