Fiora
In the Blink of an Eye
Lane harassment and consistent damage output.
Resolve
Durability and crowd control
Grasp of the UndyingEvery 4s your next attack on a champion deals bonus magic damage, heals you, and permanently increases your health.
DemolishCharge up a powerful attack against a tower while near it.
Second WindAfter taking damage from an enemy champion heal back some missing health over time.
RevitalizeGain 5% Heal and Shield Power.
Heals and shields you cast or receive are 10% stronger on targets below 40% health.
Sorcery
Empowered abilities and resource manipulation
Nimbus CloakAfter casting a Summoner Spell, gain a short
Move Speed increase that allows you to pass through units.
Gathering StormGain increasing amounts of AD or AP,
adaptive over the course of the game.
Adaptive Force
+9
Adaptive Force 
Health Scaling
+10-180 Health (based on level)
Why Grasp of the Undying
Grasp on Fiora allows you to take incredibly healthy trades in the early game thanks to the self-healing, and propels you into a late-game monster with the bonus health stacking.
Why Demolish
Demolish on Fiora further propels your ability to split-push and quickly cut down towers in the late game before the enemy team can react.
Why Second Wind
Second Wind's mid-fight health sustain paired with Grasp makes you an incredible duelist with massive healing potential.
Why Revitalize
Revitalize further empowers your self-healing from Ravenous Hydra, Grasp, and [R] making you almost impossible to 1v1.
WhyNimbus Cloak
Nimbus Cloak's burst of Movement Speed when casting [R] helps your ability to chase down the target to kite around them to hit every vital quickly.
WhyGathering Storm
Gathering Storm futher empowers late-game monster dueling pressure.
Grand Challenge and Carry
Lane harassment and consistent damage output.
Precision
Improved attacks and sustained damage
ConquerorGain stacks of adaptive force when attacking enemy champions. After reaching 12 stacks, heal for a portion of damage you deal to champions.
TriumphTakedowns restore 5% of your missing health and grant an additional 20 gold.
Legend: BloodlineTakedowns on enemies grant permanent Life Steal, up to a cap. Once the cap is reached, increase your max health. Weaker earlier but stronger later game than other Legend Runes.
Last StandDeal more damage to champions while you are low on health.
Sorcery
Empowered abilities and resource manipulation
- Nimbus Cloak
After casting a Summoner Spell, gain a short
Move Speed increase that allows you to pass through units. - Gathering Storm
Gain increasing amounts of AD or AP,
adaptive over the course of the game.
Adaptive Force
+9
Adaptive Force Health Scaling
+10-180 Health (based on level)
Why Conqueror
The bonus Attack Damage from Conqueror allows you to 1v1 any champion in an extended fight where you're able to repeatedly proc vitals for even more True Damage.
Why Triumph
Close skirmishes will allow you to come out with plenty of health and continue fighting.
Why Legend: Bloodline
The additional life steal from Bloodline pairs extremely well with Fiora's passive and tendency to build lifesteal making your late-game splitting unstoppable.
Why Last Stand
Last Stand is a fantastic rune choice when it comes to 1v1 dueling and split-pushing, Fiora's forte.
WhyNimbus Cloak
The extra burst of Movement Speed from Nimbus Cloak is massive for enabling your ability to get around the enemy, chase, and proc all of the vitals.
WhyGathering Storm
The bonus AD granted from Gathering Storm makes Fiora an unstoppable late-game duelist, able to split pushing and draw pressure like none other.