I like to max out Headbutt first as it can halve most champions health in a single hit while popping them out of a turret and towards your team, or into your turret for free damage. Next up is Pulverize. It is a great skill for team fights as you can CC multiple enemy champions at once with it as well as deal out some nice damage. Last up is Triumphant Roar. Great for topping off your health while defending top turret and waiting for more enemies to show up, or for pushing a lane of creeps as you can keep your little army quite large with little effort and scoring last hits. Unbreakable Will should be leveled up at 6/11/16 as it is an amazing source of damage and damage mitigation. Attack order can be "Q" then "W" or if you are skillful you can pull off a "W" then "Q" very quickly which will pound them up when hitting them with headbutt instead of knocking them away and can take quite a bit of practice. "R" should be used whenever engaging in combat as it will vastly increase your damage and survivability.

Early game you should play very defensively and just go in for a headbutt/pulverize combo and then retreat back off until cooldowns are done unless you can get that last lucky hit with a basic attack. Once you get your Glacial Shroud you should be pretty beefy and able to take on most enemies although heavy CC on a ranged champ can put a crimp in your style if not careful.

Max out Rocket Grab first as its your primary damage. Second go for Power Fist as its CD gets shorter with every upgrade, and it is amazing crowd control, we get it's CD down to 3 seconds at level 5 once we have the Glacial shroud. Overdrive is our last to max out and will help us move around the map to where the team needs the most help or to ninja cap that undefended tower. Of course level up Static Field at 6/11/16 as it is an amazing burst damage spell. Skill combo order is grab with "Q", pop em in the air with "E" and then blow em up with "R". If that does not finish them off use "W" to make sure they do not get away and finish them off.

This is my first guide and I will be working on a more in depth section to the guide to please be patient. Please don't down-vote without trying it, if you have questions about the build feel free to ask.