Viktor starts each game with the Hex Core, an item that takes up one of his item slots, but provides him with stats and can be upgraded in the store to augment one of his abilities and improve its stats. The Hex Core can only be upgraded once, for 1000 gold, and cannot be sold back to the store.
Hex Core: Grants Viktor +3 ability power per level.
Cooldown: 9 / 8 / 7 / 6 / 5
Cost: 45 / 50 / 55 / 60 / 65 mana
Active: Viktor sends a device at an enemy unit to blast them for magic damage. The device then returns to him granting a shield for up to 3 seconds.
Spell shields will block the damage but will not stop the shield from returning.
Power Transfer grants Viktor the shield even if the target dies while the projectile is in flight.
However, the projectile must still fly to the target's location, then return to Viktor.
Range: 625 (812.5 if upgraded)
Cooldown: 17 / 16 / 15 / 14 / 13
Cost: 65 mana
Active: Viktor conjures a gravitational imprisonment device in an area near him, slowing all enemies that pass above it. Whilst under its effect, enemies generate stacks every 0.5 seconds; at 3 stacks the target will be stunned for 1.5 seconds.
Slow: 28 / 32 / 36 / 40 / 44%
The item now grants him +3 ability power per level, +200 mana, +10% cooldown reduction and +5 mana regeneration per 5 seconds. Also, Gravity Field's cast range is increased by 30%.
Death Ray has no cast time and Viktor may freely act while the ray is travelling.
Sight is granted in a small area around the beam while it travels.
There is a known graphical bug in which the beam visual-effect is stuck on the place in which it was originally cast, but the damaging part of the ability performs normally, damaging units in the intended location.
If Viktor dies while he is firing the beam it will become interrupted and deal damage up to the location where it was in the moment Viktor died.
The augmented damage over time is unaffected by this if it has already been applied.
Augment: Death's passive must be worth 21.25g for it to be gold efficient.
Cost: 100 mana
Active: Viktor conjures a chaos storm at the target location, dealing magic damage and silencing enemies in the area for 0.5 seconds. The storm cloud remains for 7 seconds afterwards, firing lightning bolts at every nearby enemy every second.
While the storm is active Viktor can re-activate Chaos Storm to move it to the cursor's location, with the storm moving faster the closer it is to Viktor.
Chaos Storm can be controlled by Alt + Right-Click or by pressing the R button (default hotkeys). It can be commanded to move toward locations or enemy champions (it will continue to follow the chosen enemy champion unless commanded otherwise).
If Viktor is affected by hard-CC he cannot issue new commands to the storm.
If the champion the storm is currently following enters stealth, the storm will continue to follow them, effectively giving away their position.
The storm grants sight around its position for the full duration.
Including the initial damage, Chaos Storm deals 8 instance of damage.
Chaos Storm remains active and continues to deal damage if Viktor dies before the storm ends.
When Viktor dies, the storm immediately stops moving and cannot be subsequently redirected.
Probable Bug: If Chaos Storm is summoned in a brush where the enemy has no vision, it will remain invisible to the enemy team for its duration even if it is redirected out of the bush. This may be a bug.
Aside from when the bug occurs, the Chaos Storm will be visible to enemies for its duration even if it enters a brush or the fog of war.