Lane harass and empowered trading.
Empowered abilities and resource manipulation
Your attacks and abilities send Aery to a target, damaging or shielding allies.
Gain a magic damage shield when taken to low health by magic damage.
Gain 3% extra MS. Gain extra AP or AD, based on your bonus MS, Adaptive.
Your first ability hit every 20s burns champions.
+20 Ability Power or +12 Attack Damage, Adaptive
You can enter debt to buy items.
Get a free biscuit every 3 minutes, until 12 minutes. Biscuits heal and permanently increase your max mana.
Aery is taken here for it's reliability and chip damage when trading with [Q].
Pay attention to it's return to you and look to proc it as often as possible with [E] poke.
Nullifying Orb lets you take aggressive trades/fights into high-threat AP mages during laning phase.
If you're laning against an AD mid, The Ultimate Hat is a better option here.
In the mid to late game, Viktor has a nearly constant haste thanks to his empowered [Q]. The bonus Movement Speed from [Q] will grant you a bit of an AP steroid.
Combined with Aery, Scorch is a great rune for taking small trades and chipping away at the enemy in lane.
If you're looking for bigger damage in late game teamfights, Gathering Storm is a decent replacement.
Future's Market plays a huge role in overcoming Viktor's pain points of rough buy-timings when rushing his Hex Core upgrades.
Earlier/easy upgrades means way more power in the mid-game.
Biscuit Delivery provides a great amount of sustain during lane so you can more reliably back on better buy-timings.
If you're playing into an easier lane, you can take Perfect Timing instead to save yourself in sticky situations.