If you're sticking to the Vampire Aristocrats theme then the first cards I'd pick up would be Vampiric Tutor (finds Skullclamp and has Vampire in it!), Bloodletter of Aclazotz which doubles your drain / damage output on your turn absolutely wild, Bloodline Keeper provides sac fodder and a strong anthem, Legion's Landing nice thematic ramp, and Sorin, Imperious Bloodlord thematic ramp and removal
2024-07-26 If multiple creatures with lifelink you control deal combat damage at the same time, the damage dealt by each of those creatures is a separate life-gaining event and Starscape Cleric's ability will trigger that many times
The final rule you need to pay attention to relates to Shinedust
You can even throw Marit Lage at your opponent
Whether you need to constantly target your own monster with buffs or if you love the mana efficient zero equip cost of Greaves is a question only you can answer
This card is an okay small creature for Rakdos decks that also has value in the later game