Honestly, this was what the Flaming Step Ephemera should have looked like. The Eidolon Step does a better effect, and the grind for this isn't RNG-based, making it a much better option. :
Eidolon: A Horror Feature Film by Dayna Noffke — Kickstarter
Deimos Art - Eidolon Step | Facebook
FLEETWIRE - Eidolon Step (slowed + reverb)-哔哩哔哩
Flitterstep Eidolon
Stream Fleetwire - Eidolon Step by Diemoond | Listen online for free on SoundCloud
Warframe: Eidolon Step - Ephemera (Update/Hotfix 25.2.3+) - video Dailymotion
Stream Eidolon Step by Katsuyo | Listen online for free on SoundCloud
Eidolon Step - Single by Fleetwire | Spotify
How to Hunt an Eidolon – The Daily SPUF
Stream Fleetwire - Eidolon Step by Kat. | Listen online for free on SoundCloud