Sorcery
You
may
put
an
artifact
or
creature
card
from
your
hand
onto
the
battlefield.
That
permanent
gains
haste,
"When
this
permanent
leaves
the
battlefield,
it
deals
damage
equal
to
its
mana
value
to
each
creature,"
and
"At
the
beginning
of
your
end
step,
sacrifice
this
permanent."