The color identity restriction means I'm excluding powerful transforming double-faced cards like Archangel Avacyn and Brutal Cathar since they have red backsides
As youre opening packs you will actually be earning Wildcards as well
For example, abilities that apply "as [this permanent] is turned face up," such as that of Crowd-Control Warden, are unaffected
We even have cards that don't exist yet on MTGO that could see play in the deck like Triumph of Saint Katherine from the Warhammer 40,000 Commander product
All of this means its harder for aggressive decks to clear away blockers and avoid trades, especially if they want to double-spell to increase their on-board lead on the same turn
These are the white cards you should bring to the table if you have a mono-white deck, but want to be able to play some costly, mana-intensive spells