I can count the number of times I've used LD effectively on one hand. It doesn't feel good to use, and the entire time it's active is just overly stressful as you hope the healer/s manage to get enough heals on you in time.

I'd personally like to see it more along the lines of: 'Prevents you from dropping below 1HP, increases heal potency of DRK abilities like Souleater by X%.' It would feel way more themeatic and useful IMO.