Hecarim, The Warring Shadow

Black Mist (At the beginning of the end step, you
may put the top three cards from your library into your graveyard; if you don't control any creatures with the
same name as this creature, return this creature to the battlefield tapped.)
If this creature was placed from the graveyard to
the battlefield, Hecarim, The Warring Shadow
gains haste and +2/+0.