Bayer, Life destructor

At the beginning of your of your draw step, if no
creature have a poison counters , choose a
creature and put an poison counter.(at the
beginning of every upkeep a creature with
a poison counters gain a -1/-1 counters. A
creature with a poison counter keep it on
the graveyard)
If 5 creatures have a poison counter
Bayer, Life destructor become a 6/6 creature
with deathtouch and hexproof