Hello everyone! I am zamlaata.
This is my first guide by the way and both good and bad reviews are welcome! Thank you!

Regards!

Viktor is a ranged mage with a mix of single target spells, area-of-effect crowd control, vector-targeting, and re-positional damage. This versatility is further augmented by his unique passive: a permanent item with different upgrade paths providing Viktor with both increased stats and bonus effects on one of his abilities. This high-skill cap mage is the perfect choice for those who wish to gain the advantage via their strategic decision making.





Abilities:
- Passive: Evolving Technology Viktor starts with a Hex Core that provides him with stats and can be upgraded in the store to augment one of his abilities. The Hex Core can only be upgraded once, and cannot be sold back to the store.
- Power Transfer - Viktor blasts an enemy unit dealing magic damage, returning a portion of the damage dealt as a shield.
Ability Augment: Increases Viktor's Movement Speed by 30% for 3 seconds
- Gravity Field - Viktor conjures a heavy gravitational field, slowing all enemies and stacking a debuff every 0.5 seconds. At 3 stacks enemies inside are stunned for 1.5 seconds.
Ability Augment: Gravity Field has an additional 30% cast range.
- Death Ray - Viktor uses his robotic arm to fire a chaos beam that cuts across the field in a line, dealing damage to any opponents struck in its path.
Ability Augment: Death Ray sets fire to enemies, dealing 30% additional magic damage over 4 seconds.
- Chaos Storm (Ultimate) - Viktor conjures a singularity on the field which deals magic damage and briefly silences enemies. The singularity then does magic damage to all nearby enemies every second. Viktor can redirect the singularity.




-Lore:

Early in life, Viktor discovered his passion for science and invention, particularly in the field of mechanical automation. He attended Zaun's prestigious College of Techmaturgy and led the team that constructed Blitzcrank – a scientific breakthrough that he expected to vault him to the top of his profession. Unfortunately his triumph was usurped by Professor Stanwick, who stole credit for developing Blitzcrank's sentience and later used Viktor's research to revive Urgot. Viktor's appeals for justice fell on deaf ears, and he sank into a deep depression. He withdrew from the College and barricaded himself in his private laboratory, cutting all human ties. There, in secret, he conceived a project for which nobody else could claim credit. Desiring both to revolutionize his field and to eliminate the jealous human emotions which festered inside him, he engineered parts to replace and improve his own body. When Viktor re-emerged, almost no trace of the original man remained.

Not only had he supplanted the majority of his anatomy, but his personality had changed. His previous hope to better society was replaced by an obsession with what he called ''the glorious evolution.'' He saw himself as the patron and pioneer of Valoran's future – a future in which man would renounce his flesh in favor of superior hextech augmentations. Though Viktor's initial appeals were met with heavy skepticism, scientists were confounded by the sophistication of his machinery. By integrating his mind with techmaturgical devices, he had been able to drastically accelerate the progress of his research. His transformation had stripped him of what he perceived as his emotional weaknesses, but there was some lingering residue of resentment against the Professor. Viktor joined the League of Legends to pit his inventions against the greatest opponents Valoran could offer, and to correct any weaknesses or inefficiencies that remained.

''In one's hand, techmaturgy is a tool. As one's hand, it is liberation.'' -Viktor

This is how i do my build

First buy
- Boots and 1 Health Potion/ Mana Potion

Then finishing
- Sorcerer's Shoes
- Augment: Death
because i am going for upgrading Hex Core - Augment: Death early in game i want Death Ray to be as strong as possible

Starting and finihing
- Rod of Ages
- Void Staff
- Rabadon's Deathcap
- Morello's Evil Tome

The Hex Core
+3 Ability Power per level. This item can be upgraded into one of three augments that enhance Viktor's basic abilities. Click the item in the store to discover its upgrades.

The Hex Core builds into -- Augment: Power, Augment: Gravity, Augment: Death


Augment: Power
+3 Ability Power per level +220 Health +6 Health Regen per 5 seconds
Ability Augment: Power Transfer increases Viktor's Movement Speed by 30% for 3 seconds.


Augment: Gravity
+3 Ability Power per level +200 Mana +10% Cooldown Reduction +5 Mana Regen per 5 seconds
Ability Augment: Gravity Field has an additional 30% cast range.

I use

Augment: Death
+3 Ability Power per level +45 Ability Power
Augment Ability: Death Ray sets fire to enemies, dealing 30% additional magic damage over 4 seconds.

Power Transfer

[Q]

45/50/55/60/65 Mana
9/8/7/6/5 sec Cooldown
600 range
Viktor blasts an enemy unit for 80/125/170/215/260 (+0.65 AP) magic damage, returning 40% of the damage dealt as a shield.
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Gravity Field

[W]

65 Mana
17/16/15/14/13 sec Cooldown
625 range
Viktor conjures a gravitational imprisonment device, slowing all enemies by 28/32/36/40/44% of their Movement Speed and stacks every 0.5 seconds. At 3 stacks the target will be stunned for 1.5 seconds.
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Death Ray

[E]

70/80/90/100/110 Mana
13/12/11/10/9 sec Cooldown
530 range
Viktor uses his robotic arm to fire a chaos beam that cuts across the field in a line, dealing 70/115/160/205/250 (+0.7 AP) magic damage to every enemy in its path.
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Chaos Storm

[R]

125/175/225 Mana
120 sec Cooldown
700 range
Viktor conjures a singularity at the target location, dealing 150/250/350 (+0.55 AP) magic damage and silencing enemies in the area for 0.5 seconds. As it churns, it deals 40/60/80 (+0.2 AP) magic damage every second to nearby enemies for 7 seconds. The storm moves faster the closer it is to Viktor. Activating this ability again while the singularity is active will redirect it.

Q>W>R>E>Q

Q (you will get 40% of your done damage and will absorb some if enemy strike back)
W (behind enemy if possible)
R (on enemy, cloud will fallow enemy)
E (if enemy is running)
Q (last hit if enemy survive Death Ray)

Death Ray is great thing for checking bushes, baron or dragon

Because from the end of circle of Death ray is a log way

Dragon checking

Baron checking


or if enemy get behind the turret you can hit ( Chaos Storm also can do it ;))