If its a big, splashy card, like Decree of Pain or some such, then its well worth casting
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Denied
Whenever any creature dies, two +1/+1 counters go on a creature
In short, the identity of P-A-008 is Pokdex
High Utility, Low Price Blood Artist Mathas, Fiend Seeker Bloodsworn Steward Falkenrath Noble Butcher of Malakir Go for the Throat Crackling Doom Disrupt Decorum Merciless Eviction Boros Signet Rakdos Signet Orzhov Signet Heirloom Blade Worn Powerstone Well of Lost Dreams Outpost Siege Vampiric Bloodlust really made use of the lifegain/aristocrats nature of Vampires to put together a list of solid cards that could easily go elsewhere
You've got fantastic removal with Swords to Plowshares and Mortify , plenty of board wipes with Hour of Reckoning, Fell the Mighty, and Martial Coup , and even some decent lands like Sunken Hollow, Praierie Stream, and Exotic Orchard