Why've I been seeing TF in TB so much lately?

Well you're seeing TF a bunch because he was popular at worlds. People are using TB to get better at him. He basically has every pro's wet dream. Targeted, reliable CC, high damage, high kit synergy, and map wide control. He's a high skill cap champion, relying on a bit of luck as well. Wait it out, I guarantee by the beginning of this season/ mid season he will be forgotten because he is a bit bad if you aren't really good at him.

TB?

Are they using The Magnificent TF skin?

the way i started playing him is actually very very good. start e max e fiirst and w last. it is a standard asap build the standarad asap build is nashors, first rageblade runaans boots depends on who your using( sorce shoes on tf and kog (natural attack speed buff) cd boots on varus or beserker greaves) lichbane or triforce mostly lich bane for ap and lastly deathcap or hourglass. this is a standard asap build period. this is awesome on tf for the fact you proc your e every throw becuase of runaans

He brings a lot to the table. I've been practicing with him exclusively in the mid lane, winning match ups and losing match ups. His mechanics are on the higher side so it takes a lot to get him down (I'm far from close). But he's a lot of fun if you're into the whole map control/ superb teammate stuff.