Fiora has to predict your W to stun you, but can read your 3rd Q, so make sure if you're going to 3Q onto her, your E is up to dodge her W or else you'll hard lose the trade.

Fiora Counter - Best Counters from Best Data LoL Patch 13.21

Sion says “People actually don't understand how easy it is to fight Fiora as Sion, Just play the E+Q game from range. If she goes for a fight just disengage then re-engage once her W is down. Try to punish her early and snowball the lane. Don't pull until Riposte is down and try to take smart trades. quinn adc says “Level 1 Fiora will start Q 99% of the time, and if she uses Q on minion or you, trade with your AA - Vault - AA combo immediately. Fiora is extremely good at level 1. If she gets the right Vital procs, she can cheese an early first blood or leave you chugging your potions at your tower. Respect her all-in potential and do not fight her early on. Time Dragon's Eye: The user summon a magic eye above their head, anything it sees then freeze for 5 seconds, if it is living then for 2.5. Due to the nature of the spell it can only be use once in a fight. It can rotate aroundHere I suggest Tryndamere, your great damage destroys Fiora with your sword. Tryndamere is a champion who has wrath, making this blow when the Fiora each basic increase their anger, so that it hurts the Fiora with much more damage. Also this champion has theft of life and a great ultimate that helps a lot to a confrontation against Fiora. Olaf Her W is the strongest ability in the game but it has a lot of cd, try to bait it with a short combo (Q+aa+WE) dodging her W with your E. Lorsan– Links 2 enemies together, this can allow enemies that can’t be dragged to Thoran also take damage from his ultimate. PinkUnicornGod says “Ban Fiora or Vayne. She beats you at all stages in the game and is the cause of your depression. Boneplating, Revitalize secondary. Buy Doran Shield and rush bramble, then Plated Steelcaps. play safe, feel free to drop farm, just don´t die. Ask your Jungler to come gank preferably before lvl.6. Jungler needs cc though or else she can always escape by parrying your e. Time Dragon's Roar: The user breathes out a blast of temporal particles, after traveling a certain distance the particles of time remains still for 10 seconds, the opponents caught in the mix are slowed and take a light amount of damage

Fiora Counters - Best Counter Picking Stats and Matchups for

TRIAD3S says “A good Fiora is a hard matchup. Like Jax, she is better early and most of the time he is better in late duels as well.At level 11 she probably has already her first item and in top of that she has a big power spike in that level;

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sinatra1633 says “Fiora beats basically all melee toplaners. She can beat you in damage and survivability due to her kit and does not always need to hit her vitals to beat you. Fiora’s W is not to be underestimated in the lane as she can counter-CC you if you use it improperly. Try to poke her down first and then you can go for an all-in once her W is down. Baiting her W is very important so make sure you do that first. These champions are the ones I recommend most when facing a Fiora. Pantheon, Shen, Tryndamere and Olaf, are champions with endurance on the line, since thanks to their skills they can annoy Fiora and finish her easily. Pantheon

Fiora is a split pushing monster. If she can get a slight lead, she can easily take over the mid and late parts of the game. Because she is a snowball heavy champion, you must learn how to lane against her to make the mid and late game harder. Sidrome says “I feel like fiora is like camille but, in case of the darius matchup, she has the advantage, she basically early on just needs to perma Q you and run away; It's VERY easy once you get level 2. But if you die early in this matchup, with no other advantage, it goes up to an extreme level of difficulty and you may have lost the game.