Wither Skeleton

Lifelink
When Wither Skeleton kills a creature, its
controller discards a card.
Escape—{2}{w}{w}{b}{b}, Exile eight other cards
from your graveyard.
When Wither Skeleton escapes, it gains
deathtouch. Search your library for a card named "Wither, Crafted for Decay" and put it in
your hand. Shuffle your library afterwards.
Legend says that these skeletons are the remains of an
evil being created for destruction and decay,
known as The Wither.