Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
This is my build for Urgot - The Headman's Pride.
-Lock-on skill shot
-Hard to kill~lategame
-Squishy early game
-Ultimate is suicidal
-Targeted First due to Ultimate
-Takes a while to nuke a person to death
Doran's Shield - To play safely
Doran's Ring - Harass Early
Meki Pendent - Squishier but can harass harder
Sword Of Occult - Easy to gain stacks from long range
Brutalizer - Acid Hunter is physical damage
Mercury Treads - Can escape more CC champions
Frozen Mallet - More hp, damage and gives a slow for chasing
Guardian Angel - Key to become Most Annoying Champion
Blood Thirster - Helps makes you focus on pushing and gives damage/LifeSteal
Black Cleaver - Helps with the Armor Penetration
Atma's Impaler - You have high hp, gives around 40-60 extra damage
Depending on your play style
Sword Of Occult/Brutalizer
Sword Of Occult first if your opponents have 3 or more squishy champions on their team. Brutalizer if you opponents have more tank champions.
Boots of Speed
Brutalizer/Sword Of Occult
The other one.
*Luxary Item Choices.*
I suggest you go bottom lane or top lane (if your team has another ranged Champion) until you are familiar with what Urgot can fully do, then go middle.
You have one of the longest level 1 / 2 range skills in the game. Try to land NCC (Noxian Corrosive Charge) and spam Acid Hunter 3 times with your cursor over the enemy champion. While you're skills are on cooldown try to last hit and stay out of your opponents output damage range.
You should now be able to put a punch in other lanes by ganking with TC (Terror Capacitor) on for a supportive slow. Try not to be ganked and Champion Kill to get those tasty stacks on your SoO.
Use your NCC to push lanes that your team are not in so you will not attract the most attention than group pushes. Otherwise stay with your teammates and stay strong as a group to push and win with your amazing skills.
Good Luck, Have Fun.
Check out my other guides!
AP Tristana - http://www.mobafire.com/league-of-legends/build/tristanasonehitwonder-ap-7154
Hybrid Udyr - http://www.mobafire.com/league-of-legends/build/udyr-hybrid-master-13523
Sivir - http://www.mobafire.com/league-of-legends/build/sivir-and-you-thought-i-was-weak-20055