Any card (except for banned ones) from the most recent sets will work
This Creatures is cheap, helps you build up Energy counters over the course of the game, then acts a strong Energy sink in the late game
If someone wants to have a single copy of this card, they need to pay around $100 (the card was selling at $98.98 on TCG Player as of the time of writing this story)
Skullclamp needs creatures rather than life to generate you cards and so is not as cheap, nor as reliable as many of the cards on this list
We can burn a removal spell, sabotage a combo piece, or just add some value to our board
Edgar Markov reads: Eminence Whenever you cast another Vampire spell, if Edgar Markov is in the command zone or on the battlefield, create a 1/1 black Vampire creature token