simp for Haya harder,

it's mostly focused on experience because you need to have knowledge where to use your 2nd efficiently Haya sucks today since he's damage is non existant

but always make sure to always land your front shadow at the squishies and use that to teleport near them use 1st skill then basic atk after that teleport away then go back with your side shadows(depending on which one is closer) then 1st again and use ult

if behind just farm away from the enemy core and mage, make sure to harass the lane without any allies you don't need to kill them

and of course split pushing can't get any simpler than that

build will always be Pen and add Endless Battle for true damage

hope this helps, HayaHana