II

Imbue

Quicksilver Reload

I'm personally a fan of QSR and it can upgrade into magnum later. Can go active reload if you prefer but get 4800 spirit spike.

III

Toxic Bullets

Good for anti heal and sustained damage. Combos well with ricochet.

II

Battle Vest

Can buy enchanters instead if enemy is spirit.

III

Active

Warp Stone

I'm a huge warp stone fan, very good into lots of heroes. Can skip if you don't like for fort/other greens.

IV

Leech

Leech is extremely strong, you can go this very early if you are very ahead and want to start 1v6ing

IV

Ricochet

Buy when your damage feels good, extremely good for teamfights especially with leech.

IV

Crippling Headshot

Good for damage/anti heal.

IV

Escalating Exposure

Gives good spirit resist, take that into account. Also good damge of course

II

Suppressor

If enemy has several gun heroes I'd buy

II

Active

Slowing Hex

Huge fan of slowing hex if you're playing active at all. Good into so many heroes/items

III

Active

Silence Wave

Slowing hex alternative, can be good since it shreds spirit

IV

Spirit Burn

I don't really buy but if enemy has too much healing and you have slots/money

IV

Imbue

Mercurial Magnum

Very late game upgrade

II

Healbane

Can buy if you have tesla, dont get if you have toxic

III

Counterspell

Can go this against certain ultis if you're being active. Wraith, holiday, etc

IV

Spellbreaker

Good against some burst heroes, also gives debuff resist

III

Veil Walker

Not a big veil fan, especially post nerf but you can buy

IV

Active

Unstoppable

Holy trinity is leech, ricochet, unstoppable for teamfights

IV

Active

Divine Barrier

I buy this sometimes against pocket, shorter cd than debuff remover and can be used on teammates.

II

Active

Fleetfoot

If you like fleetfoot and have slots, I personally don't go for it.

III

Burst Fire

Can get if you want more attack speed, good for burst and sliding

IV

Silencer

Can buy if enemy has a ton of annoying casters, good with rico

IV

Spiritual Overflow

I'd probably pick up other stuff for damage, also worse post nerf since doesn't provide duration.

IV

Active

Capacitor

Don't think you buy. Anti movement.

II

Spirit Shredder Bullets

Can skip for bigger items, good though

III

Spirit Rend

Can skip for bigger items, good though

III

Fortitude

Possible buy instead of battle vest/spirit lifesteal/enduring.

I

Rebuttal

Don't usually buy unless they have a lot(really a lot) of melee

II

Weapon Shielding

Hard to procc so I'd just go for spirit or reactive if you really need.