Urgot may very well dethrone Nasus for the title of “Coolest Voice-over.” I realize this is only my opinion, but for those of you looking for that auditory thrill, definitely check out Urgot in the coming patch. I've even left a sample (my favorite voice clip of all time) in the video! Be sure to turn up your speakers or headphones nice and loud.
Urgot is very unique in that his role seems to shift part-way through the game. Acid Hunter deals amazing damage early on, allowing you to kill off frail targets easily. However, its poor scaling requires you to take a different role later on. With this in mind, I find that building him for early damage and late tankiness makes for a well-rounded Urgot build. The playstyle that follows is that of an assassin: Find the squishiest target you can, hit him with your ultimate, and unload your damage along with your team.