Unearth
(
: Return this card from your graveyard to the battlefield. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)
Equip
Equipped creature gains Haste. When equipped creature attacks, sacrifice Nails of Need.
See Challenge # 116. Technically, this card feels like a flashback sorcery, too. I don't think people would notice as much, though, considering the other two pieces of equipment do not.