Tainted pact + Divine flesh life recovery

Self igniting with sufficiently high DPS makes tainted pact "reserve" life until you die from over reserving it. It shows up as just empty life but you still have the recovery up until that point depending on the magnitude of the ignite. A few million DPS kills you by over reserving life. You would degen say 50*your hp/s but also recover 100*hp/s so you should reasonably not die from it even though the current implementation might make it so.