Burst damage and late game scaling.
Burst damage and target access
Hitting a champion with 3 separate attacks or abilities in 2s deals bonus adaptive damage.
Recover health when you damage an enemy champion.
Collect eyeballs for champion and ward takedowns. Gain permanent AD or AP, Adaptive for each eyeball plus bonus upon collection completion.
Unique takedowns grant permanent cooldown on your Ultimate.
Empowered abilities and resource manipulation
Hitting enemy champions with a spell grants maximum mana.
After reaching 250 mana, Manaflow Band restores 1% of your missing mana every 5 seconds.
Gain increasing amounts of AD or AP, Adaptive over the course of the game.
+5 AD or 9 AP
+6 Armor or 8 MR (match-up)
Electrocute's burst damage synergizes well with Neeko's trade pattern of [E]->[Q]->auto to set you up for major damage.
Taste of Blood's lane sustain power is especially important when making early trades before you hit 6 for kill pressure.
Eyeball Collections snowball stacking nature is great for taking advantage of early kills and assists.
Neeko's devastating [R] has the potentially to single handedly win a teamfight. Keeping it on a low cooldown opens you up for more opportunities.
Manaflow Band is your primary source of mana regen during lane phase so you can keep you poke active.
Neeko's high AP ratios makes Gathering storm a great rune for carry 30+ minute games with a well-timed [R].