As Twisted Fate you can play as either a squishy dps carry assassin or as a AP nuke. Playing TF AP is better since you can do more dmg.

Just get TF some magic penetration. flat ap and ap per level runes.

For items, i suggest you first get a Dorans Ring for laning. After that get some sorcerer shoes for magic penetration. After that get Sword fo the Divine for extra attk speed and the magic dmg passive. The attack speed is important since you only deal bonus magic damage every 4TH attack. After that, get a lich bane for increased Pick A Card damage. After, get a rabanon's deathcap for extreme AP. For you 6th item, get spell vamp for healing. And if you have the time, sell you Doran's Ring and get more AP.

First get W for laning and harrassing. After that try to max out your E but get your Q atleast once before your ult. Then, try to max out your Q and then your W.

Pros
-Can deal huge splash damage
-Can nuke
-Stronger than DPS TF
Cons
-REALLY SQUISHY

Just keep using your red card and blue card, you'll do just fine.

The best thing about Twisted Fate is his stunning Gold Card and his World Wide teleport. You can use his gold card to support your team and you can use your teleport to reveal where your enemies are.

You can use you gold card to stun enemies and you can use your red card to slow multiple enemies since the effect splashes.