Do you want it to work as Thrill of Battle or just like Defiance? That is quite a BIG difference. If you want it to work as Defiance - then 6 second uptime will not be enough to even heal WAR to MAXHP (like he has 8000/10000HP hits inner beast and gets to 8000/12500), if you would like to be it like Thrill of Battle (like he has 8000/10000 and then 10500/12500) it would be OP as hell because it would give you Defiance buff and Thrill of Battle heal. It would be those 2 combined.