Duelist's regeneration effect stacks up against champions, so don't be afraid to engage in small skirmishes.
Lunge is a mechanically simple skill, but it has a lot of nuances to its usage.
Lunge is often underestimated for its damage, especially at early levels of the game. A quick double click on the same champion works as a decent nuke.
Remember that, while most of Fiora's damage comes from standard attacks or modified standard attacks, Lunge is an ability, so it can pierce through statuses like blind and Counter Strike to deal damage.
To maximise damage output, apply as many autoattacks as you can before using the second Lunge.
Activate Burst of SpeedBurst of Speed before using Lunge for best results; the extra movement speed will gain a stack from Lunge, allowing you to continue attacking the target, and finally use the second Lunge to further damage the enemy.
Make good use of Lunge's second cast to stick to your target; if the enemy has their own mobility or escaping skills, try to force them to use it prior to your second Lunge cast.
If you're chasing an enemy champion that's too far use Lunge on a enemy minion and use its second dash to catch up.
Try to use Riposte when the enemy is already in half-swing or when their ranged basic attack is in mid flight.
Against melee champions Riposte is much harder to successfully parry an attack with, due to the near-instant attack time. Unless your opponent is predictable, it may not be worth it to bait attacks hoping to apply the parry damage.
Fiora's skill order is not set in stone, and varying it depending on the game's situation can make you much more effective.
Skilling Lunge makes it gain a decent amount of damage, but more importantly greatly reduces its cooldown. This can make all the difference in chasing opponents, especially those with mobility skills that could otherwise evade and kite Fiora.
Riposte improves Fiora's offense while providing a situational defensive move. Parrying attacks constantly, especially enhanced attack abilities, can save your life. The passive AD bonus is also quite sizable and improves all your other abilities' effectiveness to a small degree.
Burst of SpeedBurst of Speed becomes an incredibly potent steroid when maxed out, and most champions will be unable to keep up with Fiora's sustained damage while it is active. However, it is easily countered by saving crowd control abilities until after it is activated.
Blade Waltz not only deals damage, but also prevents targeting from enemy abilities.
Blade Waltz makes you untargetable for the duration of the ability and also removes turret aggro from Fiora, so it can be used to finish off low health enemies hiding under their turret.
Blade Waltz basically counts as 5 separate basic attacks. Hence, it will proc all on-hit effects and be affected by any other autoattack modifiers (except for attack speed buffs/debuffs and crits), including the summoner spell Exhaust. However, all proc on-hit effects will stack after the first attack, granting only 4 procs (the first hit starts at 0, the second at 1, and so on, etc.)
If you are caught at low health and have strong lifesteal use Blade Waltz , dealing massive damage and restoring a large portion of hitpoints after it.Needless to said that you are protected from damage for the duration
However, Madred's Bloodrazor is very costly and somewhat situational (against high HP targets).
Ionic Spark, similarly, will increase her attack speed and will proc at least once during Blade Waltz, which, against four enemy champions, will increase the damage dealt to each by 110.
Wit's End is also useful as it will proc on all hits of her ultimate Blade Waltz. Along with the magic resistance and AS that it provides, the item is very useful on Fiora, especially if the opponent team is AP heavy or if an AP heavy champ constantly focuses you.
Furthermore, The Black Cleaver will reduce armor on every hit of her ultimate Blade Waltz and therefore increasing the damage dealt. In teamfights where your Blade Waltz can hit multiple targets, the armor reduction will be very helpful. In a 1v1 case, the armor reduction will greatly increase your already impressive damage from Blade Waltz.
Building lifesteal is very important for Fiora as it allows her to regenerate large quantities of health while she is untargettable during Blade Waltz.
Building a Tiamat will cause all of Fiora's standard attacks to deal splash damage, including Blade Waltz. In most games, a Tiamat will be a waste of gold and an item slot that you could have used on something else, and enemies will normally not be bunched up tightly enough to fully make use of the splash-damage passive but if your team has someone like Galio on it, who can keep the entire enemy team together for a few seconds, you can potentially multiply your damage output heavily with a Tiamat.
Keep in mind, however, that the role of Fiora is normally to pick off low health and/or high priority targets, making Tiamat a questionable choie on her even with Idol of DurandIdol of Durand on your team since Tiamat costs a fair bit of money for an item which doesn't tremendously augment your single-target damage, especially when Fiora's primary targets are often back-lines characters who won't be standing near enough to anything for Tiamat to deal any splash damage.
In any case, one should NEVER build more than two Tiamats on any melee champion since, after buying two, all standard attacks will splash for 100% damage. Building more than two Tiamats will cause a champion to deal MORE damage to surrounding targets than they deal to the primary target of their attacks, which is rarely a useful situation unless you're smart enough to attack targets beside your target, dealing more damage to the intended target(s).
Statistically speaking, if Fiora builds 4 Tiamats , boots and a fully stacked Bloodthirster with full AD runes and every hit of her ultimate damages and procs Tiamats on the whole enemy team, her damage output by her ultimate to her selected target will be close to 7000 damage, the other 3 champs physically hit by her ultimate will take over 7500 damage and the champ that was not physically hit by it will take over 8000 damage from the Tiamats alone. This is because her Blade Waltz hits only 5 times and the first and last hit are applied to the same target so they will take 25% damage on the last hit, the other champs hit by the ult (3 champs) take 3 times the 200% of Tiamat's damage and 50% Tiamat damage off the final hits. The champion left unhit by the ult itself will take 4 times the full 200% Tiamat damage and the 50% from the final hit. As every champion has armor and have an extremely low chance of ALL being in the Tiamat's splash range, these numbers will be approximately 3-4 times of what could be expected in-game.
Fiora is adept at dealing a lot of physical damage quickly, making armor a clear method of protecting yourself.
In the top lane, Ninja Tabi is a highly effective way to become deceptively hard to kill to Fiora.
Buying Thornmail is a very good option as Fiora relies heavily on basic attacks to cause damage and it would benefit almost every member of the opposing team and increase their survival chance.
A crowd control effect applied on Fiora when she activates Burst of SpeedBurst of Speed will severely lower her damage output. In addition, if she is unable to autoattack or use Lunge during the 3 second duration, she will not gain bonus movement speed.