Creature — Horse Spirit
Soulbond
(You
may
pair
this
creature
with
another
unpaired
creature
when
either
enters.
They
remain
paired
for
as
long
as
you
control
both
of
them.)
As
long
as
Thundering
Mightmare
is
paired
with
another
creature,
each
of
those
creatures
has
"Whenever
an
opponent
casts
a
spell,
put
a
+1/+1
counter
on
this
creature."
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