This WA tracks the remaining amount of your shields on party and raid members.
Please keep in mind this is an approximation. Now that Val'anyrs are in the hands of some healers, absorb sources may or may not impact the damage tracking.
Feel free to adapt the display to your likings
0% - Red - 25% - Orange - 50% - Yellow - 75% - Green - 100%
Formula depends of your disc' talents & your spellpower.
It can be found as commented string inside "actions" tab, feel free to tell me if there is an error :)
Checkout my other Weakaura for Val'anyr absorbs https://wago.io/fTC-UJy3F