Simply the champ you can go tower dive with and not dying If you use your ultimate.
Also im ekko main and i know these things about him: Easy champ,Easy kills,Makes enemy team tilt if your not one of those noobs. So Good luck!!!!

Try to land your W infront the enemy so you can stun them more easily,And if you have gotten some items already well its 90% they will get killed.

Farming very easy for ekko because hes Q if like Ahri's and if you want deal more damage to farm get Luden's echo.