3 Klothys, God Of Destiny Klothys gradually consumes graveyards, one card per turn, but makes its presence known despite a slower approach to graveyard hate
The Vampire is a powerful 2/3 that draws you one card when one 2 power or smaller dork ETBS, but just one per turn, so that's free but not abusable
Neheb, the Eternal synergizes perfectly with the extra combat cards, also serving as a useful card in the 99 of other red decks, At the beginning of your postcombat main phase, Neheb allows you to gain one red mana for each life opponents have lost this turn
That's all down to personal taste, of course - and as the price reflects, this isn't one of the most desirable promo cards out there
It could be a solid top-end for an aggressive deck, but Im interested in it as a combo piece