World Enchantment
As
this
enchantment
enters,
you
and
an
opponent
each
choose
a
card
name
other
than
a
basic
land
card
name.
Spells
with
the
chosen
names
can't
be
cast
and
lands
with
the
chosen
names
can't
be
played.
Discovered by Femeref mages, the Null Chamber is the ultimate testing ground for the uncreative.