Phenomenon
Each
player
may
choose
a
nontoken
creature
they
own
on
the
battlefield,
reveal
a
creature
card
from
their
hand,
or
choose
a
creature
card
in
their
graveyard.
Those
cards
become
promoted
to
commander.
Each
player
may
put
their
new
commander
into
the
com-
mand
zone.
Then
planeswalk
away
from
this
phenom-
enon.
(All
original
commanders
are
still
commanders.)