chaos

at the beginining of your upkeep, put a chaos
counter on chaos, then, if there are 1 or more
counters on chaos, create a 1/1 red chaos spawn
token creature with "when this creature dies, it
deals 1 damage to any target, then, if there are 2
or more, each player sacrifices a creature, then,
if there are 3 or more, each opponent loses life
equal to the number of creatures that have died
this turn, then if there are 4 or more, create a
7/7 red and black chaos beast token creature.