Ekko
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Lane harassment and consistent damage output.
Domination
Burst damage and target access
ElectrocuteHitting a champion with 3 separate attacks or abilities in 3s deals bonus
adaptive damage .
Sudden ImpactDamaging basic attacks and abilities deal bonus true damage to enemy champions after using a dash, leap, blink, teleport, or when leaving stealth.
- Eyeball Collection
Collect eyeballs for champion
takedowns . Gain permanent AD or AP,adaptive for each eyeball plus bonus upon collection completion. 
Treasure HunterUnique
takedowns grant additional gold the first time they are collected.
Inspiration
Creative tools and rule bending
Triple TonicUpon reaching level 3, gain an Elixir of Avarice.
Upon reaching level 6, gain an Elixir of Force.
Upon reaching level 9, gain an Elixir of Skill.
Cosmic Insight+
18 Summoner Spell Haste
+10 Item Haste
Adaptive Force
+9
Adaptive Force Adaptive Force
+9
Adaptive Force 
Health Scaling
+10-180 Health (based on level)
Why Electrocute
Ekko can easily proc Electrocute with [Q] and [E], allowing him to burst down his opponent before they know what hit him.
Why Sudden Impact
After casting [E] Ekko gains **both Magic Penetration and Lethality** making his assassination potential incredibly high.
Why Eyeball Collection
Eyeball Collection's ability to assist you in snowballing an early kill is great for solo queue.
Why Treasure Hunter
Like LeBlanc, Ekko massively benefits from Spell Vamp on his passive damage allowing him to **sustain in lane** and pressure his opponent. If you'd prefer to have **Zhonya's/Protobelt up more often** Ingenious Hunter is a good option here as well.
WhyTriple Tonic
Zhonya's pairs extremely well with Ekko's ability kit as it allows him to buy time for the perfect Ultimate or [W] stun to get out of a sticky situation.
WhyCosmic Insight
Cosmic Insight's extra CDR is fantastic for early game skirmishes where an extra ability cast can be the difference between life and death.