Hi guys, This is my first guide and please try my build before devoting it. This champion is a fast killer if u know how to play the champion.

Pros-
Fast killer
Nice stun
Great in combos
Cons-
Focused a lot
Bad farm early game
Bad until 6

Augment Power, If your vsing fast movement Champions like Miss Fortune, Janna,or Sivir with his passive, then get this item.

Augment Gravity, A bigger cast range for your gravity field, Personally I Don't get this item but if u want to stun from far distance then get this item.

Augment Death, Now here is the power, 30% additional DoT. Get this if you want some kills.

Personally, I will get the augment of death. Whats better then 30% additional Dot. More dmg, more kills.

Power Transfer- Viktor Blasts an enemy dealing magic damage, returning a portion of the damage as a shield. This skill is the early game harasser. With this, harass them out of lane and be the dominant one in your lane.

Gravity Field- Viktor Creates a field that slows all enemy inside, if there in the field to long there is also a stun. This is your major CC and your combo starter. This is a major ability u must hit. I seen lots of people take viktor and cant aim there stun.

Death Ray- A trajectory beam, that you choose to move it to like rumble Ultimate. This is your bread and butter skill where u can do the most damage.

Chaos storm- Summoning a cloud that silences and damages all near by enemys. This is a good ability that you can use to chase down wounded enemys or use it for major damage 1v1.

Skill order
w
e
r
q
q
e

I think death fire crasp will be good for the Combo. When u start your stun deathfire crasp them to do the most Damage. If the enemys don't have much health then switch the deathfire crasp with a hourglass or a rod of ages.

rabadon's Death cap- 30% more ability power and 140 ability power. Who doesn't want this?

Rylai's - nice health and slow for all your ability's. Isn't that nice.

Void staff- Wow there stacking MR because your fed, well void staff will take care of that.

To start your combo Start with your Gravity Field, Death fire crasp them followed by a death ray and your ulti. Chase them with your ulti and if there not dead, they will have to go back and you get the money same amount of money from minions and towers.

When your ganking top, bot or if someone else is mid. Let them know with a ping or tell them i'm omw mid. Start with your w and then follow up with your combo. That should kill them unless your team are noobs.

Well I be Updating this guide and this is my opinion about how to play viktor. Please comment on improvement and tell me how u like. I be adding more as I go.