Imagine you just played Adelbert Steiner on turn two, Aerith Gainsborough on turn three, and sent Adelbert into The Red Zone
These lands can not only be retrieved by Lord Windgrace, but are also accessible by cards like Crucible of Worlds and Ramunap Excavator, Splendid Reclamation, and Titania, Protector of Argoth to ensure you always have a chance to get them onto the battlefield
The Virtue saw play in Anthony Lees Top 8 Golgari deck, and both Reid Duke and Willy Edels ramp/control decks
Thus, cards like Future Sight can't get you access to transmute until you put that card in your hand
Its a blessing that Olivia can enlist some of our non-vampires into the tribe, but theres no reason why we shouldnt play the best vampires in our color identity