Honestly, WoT balefire scarring would be epic as fuck. You had a foot replaced when you were young by a wizard,.and in the future the jerk gets balefire’d so hard that his entire lifespan back to when you got your foot replaced is undone.

The charactes’s foot appears as a ghostly flicking outline, like the false light if you stare at something too bright for too long. It can make a few marks, but is not solid enough to support the character.

This could just be a clever detail, or it could be a setup for an epic campaign.