Legendary Creature — Spirit
Snake
offering
(You
may
cast
this
spell
any
time
you
could
cast
an
instant
by
sacrificing
a
Snake
and
paying
the
difference
in
mana
costs
between
this
and
the
sacrificed
Snake.
Mana
cost
includes
color.)
:
Untap
all
Forests
and
all
green
creatures.
Activate
only
once
each
turn.
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