Hello and welcome, I will be sharing the current build I use for the new champion Talon. Talon is an amazing hero that has the potential to be able to burst down any squishy in the game of his choice.

As far as runes go i use armor pen marks and quints to get the most out of my damage in the early game while using armor seals and magic resist glyphs to make me a slight bit tougher in the early game. i prefer not to go for HP regen quints because i get a philosopher stone early which helps with hp regen enough as long as you keep relatively safe till you can lock in a kill and it also helps with the cost issues this build has.

In masteries i have 21/0/9 which is fairly self explanatory. you can also go 0/21/9 if you are a person that has troubles surviving early on but your damage while be cut a bit and you wont be as scary as you could to their soft carries.

When it comes to Summoner skills i prefer Flash and Ignite.

Flash and ignite are key abilities that lets you "Carry hunt" in team fights and survive.
You will be able to ult, sprint in then go E,Q,W (ignite if necessary) and flash out before the enemy team even realizes that their Ashe is dead.

Other Options that are decent as Talon are:

Ghost, this helps you get out of a gank or chase an opponent without the hindrance of minions getting in your way for that split second that it comes down to although it is not nearly as effective as flash when it comes to getting out of a team fight.

Exhast, this also helps in the same areas that Ghost does but once again isnt as useful in a team fight.

i wont repeat the skill sequence listed above but this is what i prefer to go to kelp me farm a lot easier. You can alternatively get Cutthroat 3rd if your are sure you can guarantee a kill with it by jumping on someone but otherwise its a better choice to stick with Rake for the best farming and the slow to prevent people from running up on you too fast.

Every item in this build is important although often you wont get to your atma's or warmogs due to the high price of the first few items. also if you play well you should be getting free kills on their softies that are not in mid.

At the start of the game i get a Regrowth Pendant and a Health Potion. This helps you stay in your lane so you dont miss out on the precious money or exp.

As soon as i have the money i go back to swap it out for a Philosopher Stone so i get even better staying power but more importantly i get the extra income.

On my next trip back i get boots and, if i need them, a few potions.

By this point i should be level 6 and gotten a kill or 2 with my Ult. I start to get quite scary after picking up a BF sword to turn into an Infinity Edge ASAP! and damage will begin to skyrocket.

After scoring a few more kills i start to get The Bloodthirster. It is very important to keep this well fed because AD stacks up really amazingly on Talon.
Another thing to note is that its a good idea to get the Vampiric Scepter before getting the first BF sword just so you can stay in your lane a bit easier

as soon as i get my main to AD items out of the way i start working to a Trinity force. I get Sheen first to help with my burst damage and then a Phage for the slow and HP. As soon as you get a few more kills with these items you can complete the Trinity Force.

usually this is around the point where games are either close or end and if you have been doing your duty and completely shutting down their carries, you win. BUT if the game continues. you shall start to work on an Atma's Impaler and finally replace your Philosopher stone with a Warmogs.

i chose these to items do to the fact that it will give you a great boost in HP that is needed to make you that much more troublesome while they work together to give you a great increase in AD and crit.

This all may be expensive but as Talon money should come easy plus you have a philosopher stone.
Once you hit level 6 there is no safe place for their squishies. you will be able to ult in and burst them down and flash out of tower range or the team fight.