Skorn, the Skeletal Ambusher

{3} Sacrifice a skeleton creature you control and
deal damage equal to its power to target creature.
Whenever a skeleton creature is sent from the
battlefield to the graveyard in this way, you may
draw a card.
Skeleton Horde (May cast this from the graveyard,
with Flash, if a skeleton creature died this turn.)
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Be aware of the dead because they may
not really be dead.