Every single game ive used this build my damge has been the same as 3-5 other DGS combined. My minion kills are 3x others and I cut through buildings like butter. Now thats the mandatory vouching for my own build^^
Skills: Towers and shoulder things. Secondary is boulder and a skill of your choosing(any of his skills works, even stats). Trebuchet at lvl8 is a MUST.
Items: If the game goes well I shop 2-3 times. At start 1x helm 1xarmor, at 3k(lvl8) 600hp +10hp sec armor and same "slot" helm. Then just get whatever hp/mana boosts. HP/Mana pool and reg is what we want. and ofc buy tp scrolls.
How to play him: This isnt a new player friendly build imo bcz you gotta know when you got multiple DG incoming and such.
Get your towers up, always run away when someone attacks then turn around and return some dmg, he will back off or die. Hence and repeat. "harassing"
Purpose: Building killer and pusher, passive dps support.
The good:
You give your team a HUGE damage boost. If there is 3-6 towers up when its a teamfight it turnes the tide heavily
You eat buildings for breakfast.
You force the team to stop your towering spree or lose. Which gives your team a map control advantage.
The bad:
Your quite stationary bcz w/o your towers you cant do anything, building up a few towers takes time.
Your bad at controlling flags, ofc u can hold one, but several is a no no.