If your priority is actually playing Magic, ProxyMTGs approach makes a lot of sense
Inner Calm, Outer Strength Inner Calm, Outer Strength is similar to Spiraling Embers in that it counts on you having a lot of cards in your hand in a color that doesnt really focus on that
I doubt it's really moving the dial enough, but it certainly could be in 4 of decks
(The reason it was after the draw step rather than the beginning of the precombat main phase had to do with which was shorter to write out on the card, as functionally they're very similar.) The one last change had to do with how the Sagas were templated
Finally, white also has some ability to revive cards from the graveyard to your hand or battlefield
Unsurprisingly, they usually account for the greater chunk of the deckbetween 80%90% of the spells are creatures and removals