Necroplasm's Aid

All Hellspawn gain vigilance until end of turn.
Search you library for a Hellspawn card, reveal it, put it into your hand and shuffle your library. It deals damage equal to its converted mana cost to target creature. If that creature would die, exile it unless it is a Hellspawn, in which case return it to the battlefield under your control at the start of your next upkeep. After battle this turn, if you control less creatures than your opponent, you gain life equal to the number of Hellspawn in all grave