Being in black and red means youll also have access to a lot of burn damage when you play this card
This is also a popular commander for the Shadowborn Apostle decks, given that you have access to helpful cards that touch white like Immortal Servitude and Edgewalker
Moonsilver Key lets you pay one, tap it, and sacrifice it to search for either an artifact with a mana ability (a mana rock, usually) or a basic land and put it into your hand
You need a non-toy creature to get the first half rolling, after which you can stockpile creatures and fire off the 6-mana room when you're ready
Even though Flower isnt as powerful a fixer as Traverse the Ulvenwald and Attune with Aether, the fact that it fixes your two main colors regardless of which one you start with lets you play a white-heavy list with little issue, and District Guide helps with a splash while also providing a body to pump with Flourish
And she's very fond of equipment