Enchantment — Aura
Enchant
creature
Enchanted
creature
gets
-X/-Y.
If
that
creature
is
attacking,
X
is
the
number
of
snow
lands
defending
player
controls.
Otherwise,
X
is
the
number
of
snow
lands
its
controller
controls.
Y
is
equal
to
X
or
to
enchanted
creature's
toughness
minus
1,
whichever
is
smaller.