Viktor starts with an item that takes up one of his item slots, the Hex Core, that 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
Active: Viktor sends a device at an enemy unit to blast them for magic damage, which then returns to him granting a shield for up to 3 seconds with an amount equal to 40% of the damage dealt before reduction.
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.
Active: Viktor conjures a chaos storm at the target location, dealing magic damage and silencing enemies in the area for 0.5 seconds. As it churns, the storm deals magic damage every second to nearby enemies for 7 seconds. Activating this ability again while the singularity is active will redirect it. The storm moves faster the closer it is to Viktor.