Pros

+Good early-mid game
+Good chaser; can "stick" to enemies
+CD efficient abilities

Cons

-Squishy
-Susceptible to focus fire
-Mana inefficient hero whom requires spamming of abilities.
-Scaling into lategame depends wholly on itemization


Laning prowess

Solo top - 7/10 Great
Solo mid - 9/10 Outstanding
Duo Bot - 5/10 Decent (there are more suitable champions)
Jungling - 2/10 Mediocre

RUNES

Greater Mark of Desolation
9
Greater Seal of Replenishment
9
Greater Glyph of Replenishment
9
Greater Quintessence of Desolation
3
Greater Mark of Desolation
Armour penetration emphasises Talon's prowess early-mid game. Gives him a much needed damage boost against champions especially tanky ones.

Greater Seal of Replenishment
Additional mana regeneration is taken to assist Talon's early game

Greater Glyph of Replenishment
Additional mana regeneration is taken to assist Talon's early game

Greater Quintessence of Desolation
Armour penetration emphasises Talon's prowess early-mid game. Gives him a much needed damage boost against champions especially tanky ones.



Alternatives

Greater Glyph of Shielding
If mana is not a problem, then take these if you know you are laning mid against an AP carry.

Greater Seal of Resilience
If mana is not a problem, then take these if you know you are laning top/bottom against an AD based champion.

Masteries are generally very straight forward. I opt for 21/2/7.
Offensive masteries are a given and should be self explanatory. They all emphasize Talon's burst damage and ability to push and destory towers quickly.

Within the utility tree masteries improving mana regeneration are taken. To cope with Talon's mana usage (without implementing a philosopher's stone early game) they are needed. Summoner's insight is taken for utility.

The last two points are spent within the defensive tree. While i have taken additional armour, an equally good alternative would be more magic resist. Take either depending who you know you'll be laning with.

Q-E-W-R

Recommended harassment combo for AD champions
Charge Q before initiation then E to the enemy so that the auto attack timer does instant burst. Also Q's effect stacks with E for maximum burst.
W to slow and keep in melee range whereby Q should be close for another use. Otherwise make the choice whether to use R to secure a kill or to keep it for the potential need to escape.
The rake slows the AD enemy to minimise damage by getting away ASAP after harassment.
W-Q-E-R

Recommended harassment combo for AP champions
Works in a similar fashion. Instead of jumping immediately, a rake is used as the initiator and the Q-E combo is used for burst. The silence offers escape from offensive spells during harassment.

Solo top
Shadow Assault > Rake > Noxian Diplomacy > Cutthroat
As always the ultimate is leveled first whenever possible.
Rake takes precedence over noxian diplomacy because if offers farming ability needed in solo top. It also offers decent harassment potential. Noxian Diplomacy takes thrid precedence because it is the main source of single targeted damage. Cutthroat takes the lowest priority, however is taken at level 2 for its utility.


Solo Mid
Shadow Assault > Noxian Diplomacy > Rake > Cutthroat
Again the ultimate is taken whenever possible however, noxian diplomacy takes seconds precedence due to its exorbitant single damage output. Rake takes thrid precedence and cutthroat again takes last priority, however one rank is taken early on due to its utility.