How to counter Templar Assassin

In lane

Phoenix
• All of Phoenix's spells eat through Refraction VERY fast. • Templar Assassin is not the best Supernova killer due to her low range and mediocre attack speed.
Razor
• Templar Assassin is a short ranged hero with limited mobility once she commits to the fight. This can make it easy for Razor to stay on top of her with Static Link. • The combination of Static Link and Eye of the Storm eats through Refraction fast.

Dragon Knight
• Templar Assassin has a hard time killing Dragon Knight due to his high armor and HP. • Breathe Fire gives her a significant damage reduction. • The combination of the corrosive attack from Elder Dragon Form and Fireball eats through her Refraction pretty fast. • The frost attack from Elder Dragon Form combined with Shiva's Guard make her attack speed a joke.
Phantom Lancer
• Templar Assassin's damage is mostly single target which means she cannot deal with his illusions. • Phantom Lancer's illusions' attacks instantly shred Refraction. • Phantom Lancer can dodge her attack projectiles with Doppelganger.
Meepo
• Templar Assassin's damage is mostly single target which means she cannot deal with Meepo's clones. • Meepo's clones' attacks instantly shred Refraction.
Terrorblade
• Templar Assassin has a hard time killing Terrorblade due to his high armor. • Terrorblade and his illusions' attacks instantly shred Refraction. • Terrorblade easily outranges her in fights. • Reflection contributes to removing Refraction charges and the reflection sticks on Templar Assassin if she uses Meld.

Smoke of Deceit
• If you are planning on making a move, it's best to use this item as you might be noticed by a well placed Psionic Trap.
Sentry Ward
• You need detection to find her Psionic Traps.
Gem of True Sight
• Consider buying an early Gem of True Sight to remove her Psionic Traps on the map.