After hearing about it on kripps livestream, i tried it out myself. TLDR: 1:30|2:01
Glitch while entering Ghom.
If you use furious charge with dreadnaught through you gain the effect until you die. With overpower and nearly 1k LoH i was healing for 1mill hp per second if not faster (Tick rate is close to 2 or 3 per second.) 1:30 Just before Ghom's cutscene charge into the arena and you can retain the effect. More glitches in D3.