Tf is a really strong mage as well as an adc but we are going to go over the AP build for him (more mainstream). He is a rather difficult champ that can nearly one shot carries mid-late game with a w,e combo. Tf is a really strong poker in lane with a w stun into an immediate q for some easy damage. Similar to Galio Tf can roam extremely well with his ult because it has absolutely no use in lane as it is a teleport and does no damage for kills. Overall Tf is a really strong champ and I feel like if he was played more he would be an instant ban for ranked.

Tf's w is the main damage of his kit. Early game you are really only going to want to use your blue card because it actually gives you more mana back than what it initially costs. I would reccomend to start it first for some early damage aa's along with easier farming capabilities. I love to invade when i play Tf because i can use different cards for the different situations but you are mostly going to want to use your gold card's stun. An absolutely insane damage combo is to stack up your e so that your next aa will do extra damage, pick a card which will activate lich bane, and then use the ability which will do about 1500 damage late game hense my earlier point about one shotting carries.

A lot of people that i see play Tf absolutely screw up roaming with his ultimate. Here is how you do it correctly. Ult for vision, charge up a gold card while you have vision, teleport, and BAM!!!! TOTAL DOMINATIONNNN.