Not at all possible without 0ceal0t's VFX Editor plugin! So easy, a RPR can do it!
Dekken's vampiric version of Shadow Wall gave me inspiration to do something with the skill, myself. I also use the same sound file because it's perfect! Check out his mod here: https://www.xivmodarchive.com/modid/41745
Author's Comments:
Prayers of the desperate fall upon deaf ears.
Don't cry no more, don't look to the sky no more. Ever thought that the DRK limit break looked amazing but rarely were blinded by its majesty? Well worry no longer! You can now literally bathe in it! This mod also has an intuitive feature with pulsing sigils for the duration of Shadow Wall, and a vfx for when the duration is over!
ANIMATION SWAPPER: This mod replaces the original Shadow Wall animation with the animation for Tar Pit.
If there's any bugs, let me know! Kira Sadboi#0001