Wrack
Client records describe this reading. They do not confirm availability in gameplay.
Current client record
Tears the target apart from within, inflicting 36 Shadow damage every 1 sec and increasing the damage they take from your other Shadow damage over time effects by 10% for 6 sec.
Sourced change history
No changes in the tracked log could be matched to this record. This does not mean the ability or item has never changed.