Twisted fate has received very little play because of the nerf to his ultimate. (It used to have infinite range. imagine warping to their turret from your spawn and killing it BD)
I will explain how i play twisted fate. He is not under powered like renekton or evelyn. He has nice burst when played correctly. BD is back dooring.

Twisted fate should not be built AP. He has bad ratios.
As one of my most played champions i can tell you HE IS HARD TO PLAY

[TL;DR]: Twisted fate is HARD TO PLAY. But carries like a boss.

Pros

-Great burst
-Extremely fun to play (like renekton)
-can Back door (BD) with his ultimate quite nicely
-Nice escape (Ult, stun card)
-Good ganking
-Can even jungle! (But not recommended)

Cons
-Kind of under powered.
-One of the hardest champions to play.
-Requires skill.
-Positioning knowledge needed.
-Targeted in team fights.
-Not very useful in team fights.

Mid TF is the better option if going against a champ who doesn't have much range:
Annie
Caitlyn
Xin zhao (Happens alot)
karma
ziggs
And basically any champion with low mobility

You SHOULD NOT go mid if the enemy champion has high mobility or long range like:
Kassadin
Le blanc
kog maw
Morgana (HER SPELL SHIELD BLOCKS STUN CARD RAGE RAGE RAGE XD)
Ahri

AD bot (with support)
You want to go AD bot if the mid has any that i listed in :"ranged or mobile":
AD bottom lane twisted fate needs a tanky bruiser
(ie: singed, maplite, karma, cho gath, gankplank, jarvan, leona)
or support: (ie: soraka, sona, karma, taric, janna)
I dont like AD bot because of the range issues and most Ranged AD's that go bot will beat you in a skirmish (ie: tristanna ez, kogs, caits)
BECAUSE tf harrasses by picking stun card (gold) and stunning.

[TL;DR]: TF needs to go against a low ranged champion with small mobility. (champs like ashe)

After you have chosen mid or bot buy dorans blade and head to that lane (if the jungler dosent need protection or blue. Or if your team wants to go for an early FB)
Try not to harass to heavy til level 3~ish.
Once you have put a point into stacked deck you will get a passive skill. The passive skill will give bonus magic DMG every third attack. (Indicator above your health bar) Choose stun card run up to em' and stun them. Throw wild cards and go back to farming.
The stuncard will proc your Stacked Deck passive.

Try saving 920 gold before you go back your first time. If you have saved enough, buy the beserkers greaves. Save 1600 Gold (IF YOU CAN, theirs no harm in going back early) and purchase the Wriggle's Lantern. Head to the enemy blue buff and use your ward if its NOT THEIR
If it is, you should be able to take it fairly easily.

When you get your trinity force you will have extreme burst!
But as you get more items and skills to proc, it will become more difficult to land them.
As soon as you have your stacked deck passive ready (IT WILL BE BLUE) choose stun card
and hit em'. Every time you use a skill the Tforce will give you bonus magic DMG on your next attack. so as soon as you select your stun card, you get the Tforce passive.
Continue to ward and steal the enemies blue until the enemy is all around level 13. Then start warding baron. Just for fun lets do some math, Sdeck ready for proc, gold card selected, trin force ready for proc and then you hit a crit with your new infinity edge, WA BOOOOOM 700 dmg or so. ON A 5 SECOND COOL DOWN. at after your trin force you can solo dragon, BE CAREFUL OF GANKS. Get your infinity edge, banshee veil then phantom dancer and your ready to BD. Warp to a enemy turret when no enemy is around that turret. It should be easy to solo it. If not heal up on some minions and try again.

One of three champions with a (Almost universal teleport or warp) the other two being pantheon and shen

Wild cards is the longest non-ult skill shot nuke IN THE GAME. Second is Nidalee's spear.

Shortest cool down stun: the gold card, five second cool down.

Three skills in one, Pick A Card: Blue card, Red card and Gold card.

Blue card returns mana double to the amount of DMG dealt. Rarely run outta mana.

Twisted fate is a hard champion to learn.
Twisted fate is an EXTREMELY fun champion.
Twisted fate is one of the most played champion in tounaments.
Famous pros that use Twisted Fate:
CLG's BigfatIP
SK's Ocelote
Salce
Reginald
Atlanta (He jungles with TF)

Play TF he's fun, but hard

I hope you enjoyed the guide and PLEASE VOTE.