TenSoon, Wearer of the Dead

You may have TenSoon, Wearer of the
Dead enter the battlefield as a copy of
any creature card in a graveyard.
Whenever TenSoon, Wearer of the Dead becomes the target of a spell or ability, sacrifice him.
{2}{u}{b}: Return TenSoon, Wearer of the
Dead from the graveyard to the battlefield
with a finality counter on him.