dark blood staff

{t}: use surveil 2 you lose 1 life and get a madness counter.
{t}:if dark blood staff caused you to lose 8 life or
more in that game if you have 6 or more madness counters and if you have 9 or more cards in your graveyard. create a black token 4/4 demon with flying,trample with" At the beginning of your
upkeep, I deals 1 damage to each player. Then if
you have 10 or less life, put a +1/+1 counter on
me."