Playing as a Paladin, it feels a little OP to be able to cast Sworn Enemy/Brand Enemy/other upgraded version as a free action multiple times per turn, particularly at later levels. It doesn't feel like it's working in the spirit that it was intended. Limiting casts to once per turn, or a single cast until creature dies feels like a better option for me.
EDIT - I'm also going to throw in a suggestion to remove the circle of flames from above the marked enemies upon death. Would help to de-clutter things.
Edited by farleybear, 04 February 2019 - 04:43 PM.