Your devotion to two colors is the number of mana symbols among mana costs of permanents you control that are the first color, the second, or both
Ostensibly, white is the worst color at drawing cards, but then Wizards goes ahead and gives it this miniature Rhystic Study, which will ensure you stay ahead on card draw or keep your opponents behind the curve
The good news is that he still contributes a lot from the command zone thanks to eminence, so all in all, I believe he's the new best Vampire commander
Where this precon shines is in its way to close out games
An issue for it here is that it doesn't deal with anything and so despite wanting tempo recovery cards control decks are not going to want this all that much
What makes Alrunds Ephiphany such a powerhouse in Standard is due to Galvanic Iteration from Innistrad Midnight Hunt