Wither

Flying, Double Strike, Toxic 1
Unearth {b}{b}{1} ({b}{b}{1}: Return this card from
your graveyard to the battlefield. it gains haste.
exile it at the beginning of your next end step or
if it would leave the battlefield. Unearth only as
a sorcery.
For every Wither Skeleton in play, +1/+1 to
Wither.