Pro's:
Insane burst
Nearly un-gankable
Ult does TONS of damage
E is a very nice gap closer/escape
W has a nice slow/stun with a huge shield.

Con's:
Glass cannon
HUGE mana costs.

During teamfights Ekko isn't the best champion because of his abilities only doing quick burst damage instead of being able to sustain high damage all the way throughout the fight.

To help with this, use your "E" and nuke the carry as fast as you can, then ult out.

Now this fight is in your favour and you have more chance of being able to secure an objective afterwards.

Don't overextend your time in the fight, you're a glass cannon you can't sustain your health as well as you'd like to.

This is a common practise in league, if you kill your lane/you force him to recall, push the minions towards their tower, and roam to botlane, give your adc 1/2 kills, it will greatly increase your chance of having a fed carry alongside your self, this means you can take more dragons because they can pressure the lane, resulting in an easier victory. Make sure to roam as Ekko he has extreme mobility, so use it.

Ekko NEEDS blue buff, during laning phase. That 80 mana cost per "Q" isn't helping your mana whatsoever so ask your jungler, "Hey ... Can I have the next blue buff please? :)", This will GREATLY increase your sustain and lane prowess. This allows you to play more aggressively, possibly ending up with a kill, giving you the chance to ROAM!!

http://gyazo.com/0c2362b5b40abfab31ad5a2c23f0da4c

I've not played him much, but from the games I've had he's been so good, and this guide is what I've done in those games! :D

This guide is a work in progress, this will be updated with Ekko's changes/updates and your feedback.

Thanks for reading my first ever guide!