Legendary Creature — Aetherborn Rogue
Spells
you
cast
but
don't
own
cost
less
to
cast.
Whenever
one
or
more
creatures
you
control
deal
combat
damage
to
a
player,
look
at
the
top
card
of
that
player's
library,
then
exile
it
face
down.
You
may
play
that
card
for
as
long
as
it
remains
exiled,
and
mana
of
any
type
can
be
spent
to
cast
that
spell.
5 / 5