With this build, you are able to kill any other hero after level 16.
Chose all skills, that improve the spiders. And with level 16 you have to chose the "end-skill", the leaping spiders, which jump after the other heroes like crazy.
Your gargantuan will support you like a other champ, deal damage and slow them.
Its just crazy, what kind of damage you will deal with this build.
Right positioning ist very important, and the range for your abilities.

Have fun and win with this great build.