Dusk Legion Duelist With plenty of ways to put plus one counters on your creatures, the Dusk Legion Duelist feels like one of the best card draw cards for white, and just so happens to be a vampire
This playstyle is actively supported by the cards that have been put in each of the booster packs, too, which have plenty of ways to help you be aggressive with your creatures
A three-mana 3/3 that is somewhat difficult to cast wont clear the bar for most Cubes on its own, but its also the case that most Cubes will have a lot of incidental synergies with Jinnie Fay and that Jinnie Fay will be very powerful in a lot of Cubes if you curate an environment with intentional token themes
Like Archenemy, the Turtle Team-Up set pits you against bosses in three rounds of increasing difficulty
There's also Curse of Opulence, a card you can cast on an opponent to make them a far more appetizing target for aggression
Once you run these alongside some real token-making machines like Adeline, Resplendent Cathar and Commanding Presence, Silvar becomes a real threat to the continued survival of your opponents