Darksign Embrace (3.5e Invocation)

''The darksign is a strange phenomenon some attribute to the abyss, a few extremely powerful abyssal warlocks learned to tap into the curse to become mighty undead themselves. ''

This invocation grant all benefits of the darksign undead (start in human) template to the warlock. This effect last for 24 hours, cannot be dispelled or suppressed in any ways. However if the warlock is killed during the duration of this invocation the template become permanent until the warlock restore it humanity, at which point the invocation immediately end and the warlock return to normal.

Unlike a normal darksign undead, the warlock is at constant risk of hollowing out. If the warlock is not in 'human form' it must make hollowing save each hours (with no initial 3 day wait). Essentially a warlock slain while under this invocation place itself at the risk of permanent insanity.