Enchantment — Aura
Enchant
creature
you
control
Enchanted
creature
is
a
Flagbearer.
While
an
opponent
is
choosing
targets
as
part
of
casting
a
spell
they
control
or
activating
an
ability
they
control,
that
player
must
choose
at
least
one
Flagbearer
on
the
battlefield
if
able.
