Sorcery
Each
player
loses
a
third
of
their
life,
then
discards
a
third
of
the
cards
in
their
hand,
then
sacrifices
a
third
of
the
creatures
they
control
of
their
choice,
then
sacrifices
a
third
of
the
lands
they
control
of
their
choice.
Round
up
each
time.