Fiora vs K'Sante

Position to hit the Duelist's Dance (passive) Vital: each Vital you hit heals you and gives you move speed.

Cast Lunge (Q) on the Vital's side: the strike prioritizes Vitals, and hitting an enemy lowers its cooldown.

Save Riposte (W) for enemy CC: it parries damage and effects for a moment, and if it parries an immobilizing effect, your stab stuns the first champion hit.

Hit the four Grand Challenge (R) Vitals by circling your target: if you hit them all in time, or they die after the first, you heal nearby allies.

After two Ntofo Strikes (Q) hit you, back off or dodge the next one: it becomes a shockwave that stuns and pulls.

When he charges Path Maker (W), get out of its line: nothing stops him while he charges, then he rams straight ahead and his dash knocks back and stuns.

Don't fight with your back to a wall when he has All Out (R): if he knocks you into it, you go through, he hits you again and follows, far from your team.

Focus him during All Out (R): he loses max health, bonus armor and bonus magic resist, but heals off his damage, so don't drag it out.