Fiora

Passive: Every 2 attacks, reveal a Vital on the target. If a Vital exists, dash to attack it dealing 37/56/777 bonus true damage and heal for 15% of the damage dealt.

Active: Reveal 6 Vitals on the target and quickly attack them all. If the target dies, remaining Vitals transfer to the nearest enemy. Upon striking the final Vital, create a two hex aura that heals allies within for X over 5 seconds.

Exact values aren't in Riot's published Set 17 data (shown as X).