Why focus on two colors and limit what cards you can draft when you can easily go 3 colors and just have more options
Since cards printed in Commander decks are playable in Legacy formats (and also show up in spikier casual formats like Cube), players from those formats snapped up the precons, leading to shortages and decks being sold for well over MSRP
You could also look to use spells that exploited your milled opponents like Spelltwine and Memory Plunder
The commanders of the deck, Temmet, Naktamuns WillTemmet, Naktamuns Will and Hashaton, Scarabs FistHashaton, Scarabs Fist, are both exceptional commanders, with some serious potential to lead incredibly powerful decks
Voldaren Stinger is likely a much more important iteration of this effect, since BR vampires really cares about getting in a point of damage on the first few turns