In my epic game, I am playing a level 30 Keeper of the everflow.
Keepers have a level 24 feature:
Life Overflow (24th level): Once per day when you start your turn at 0 hit points or fewer, you regain hit points equal to your bloodied value and end all effects of your choice that are affecting you.
If an attack brings you to negative bloodied, is your turn order preserved in the initiative order?