Eternals in the Look tab are champion stat trackers in League of Legends that show off your achievements on specific champions. They track things like milestones, record them over time, and can display them in-game so other players can see your progress.

What they do

  • Track champion-specific stats and accomplishments.
  • Show progress toward milestones during and after games.
  • Add visible flair to your profile/mastery presentation, not gameplay power.

Why they appear there

Riot placed Eternals under progression-style menus because they’re part of your champion showcase, not a gameplay setting. In practice, they’re meant to be a flex/achievement system for the champs you play most.

Simple example

If you main a champion, an Eternal might count things like takedowns, skill hits, or other signature actions for that champ, then pop up when you hit a milestone.

Important note

Eternals do not give combat advantages; they’re cosmetic/stat-tracking features only.

TL;DR: Eternals are basically LoL’s champion achievement tracker in the Look/Progression area, used to showcase stats and milestones, not to boost gameplay.