Or you can just ignore the back. There are Commander players who build a deck and ignore one or more colors.
903.4 The Commander variant uses color identity to determine what cards can be in a deck with a certain commander. The color identity of a card is the color or colors of any mana symbols in that card’s mana cost or rules text, plus any colors defined by its characteristic-defining abilities (see rule 604.3) or color indicator (see rule 204).
903.4c The back face of a double-faced card (see rule 711) is included when determining a card’s color identity. This is an exception to rule 711.4a.
903.5c A card can be included in a Commander deck only if every color in its color identity is also found in the color identity of the deck’s commander.
Thanks for playing.
Edit - clarification: If you were suggesting using as a commander, sure you are correct but Xcric was referring to its use in the 99. A monocolored White EDH deck cant use this "amazing white card" so it falls flat.
Yeah, I was thinking of Mila leading the deck. Big misread on my part.