Shadow, Titan of Shadows

When Shadow enters the battlefield, sacrifice it
unless it escaped.
Whenever Shadow enters the battlefield or
attacks, draw a card then up to three target
creatures gains shadow until end of turn. (It can
block or be blocked by only creatures with shadow.)
Escape—{b}{b}{b}{b}, Exile five other cards from
your graveyard. (You may cast this card from your graveyard for its escape cost.)