Damian is here to rule the night much like his father before him.

First, let's cover the mods. I run Empowered Marauder Knife, Empowered Deathstroke's Claymore, and +5 CDR Timepack. I use the Attack Pen augments Force, Slasher, Shrew, and Horsepower.

The Build: I start with T1 marauder shield and knife and 3 health pots. I build the knife to T4 before taking Rip Hunter's Time pack. I like Rip Hunter's for the high damage, and large amounts of CDR. Not to mention later in the game you can use it escape a team fight if needed.

Once you get T3 Pack move onto Claymore. Around this time, you may want to slowly start putting levels into Lobo's Chain. Once you max Claymore, build up Lobo's Chain. You will benefit greatly by having some bonus health, and an extra slow to help secure a kill. Now, you can build Atomic Axe if they are stacking Armor, or move onto an optional item if they are not. If for some reason your enemy has a very low attack armor total, don't build Atomic Axe and move into an item combo like Crossbow and Utility Belt/Atlantis Gambit.

The "How": Clear out your health camp with some help from a leash. Clear the next two camps near there, and invade to take an enemy camp if you dare. Remember to leave a small creature behind so it does not regenerate. Now move onto to clear the camps on the other side of the mid lane. Now rinse and repeat the jungle clearing. If you have a lane advantage when the Surviellance drones spawn, take it. 

Once you start building up some attack damage, target the weakest, most exposed enemy champion in lane. Gank using Q to knock them down, E to jump behind them, and BA, W and BA chasing them using Zatana's Slow to secure the kill. Once you cap your Claymore, use the activate to easily take out high priority enemies in ganks.

Teamfights: Take out their assassin. Just destroy them when they try to break through their frontline. So many assassins/low health bruisers do this constantly at the start of a team fight. Make them pay, and rethink their approach to team fights which will pay dividends late game. Also, it doesn't hurt to jump on Sinestro when he tries to E in. Next, focus the closest low health target. Your whole team should make this guy their next priority. You then move onto their next standing carry. Remember, your an assassin. Unleash your combos, and don't stand aroudn trying to BA if you are drawing major attention. Ult when a champion is low for maximum effectiveness.

Mastering Q: If you play him a few times, you will start learning how to master your Q for both clearing and CC. You will even be able to connect on enemies who are constantly moving with enough practice.

On Coast City: Take T2 knife at the start with 3 health pots. The rest of the build is the same.