This small addon monitors casts in group or raid to see if a Soulstone was set.
It records which caster soulstoned which target, and how long it will be up.
It will output soulstones as text in chat window, and provides a minimap button with mouse-over list of active soulstones. (LDB compatible for e.g. TitanPanel).
/soulstonemonitor switches the Minimap icon off and on
Known issues:
After reload or when joining a group, it can find applied Soulstones, but it won't have information on who casted it. Those will be listed as "unkown".