Within the lore, the story behind Solphim, Mayhem Dominus is both brief and odd
Besides spells with flashback, youll also find spells with the retrace, aftermath, and jumpstart mechanics, so you can get maximum value out of your graveyard
Oh, and one more thingyou can preorder booster displays, Commander decks, and other Wilds of Eldraine products for pickup at the Prerelease as well
If the card you discard happens to be an artifact, be it the one you tutored up or any other, Reckless Handling will deal two damage to all of your opponents
As my #3 choice, I would suggest that a tokens-matter build is best for the card
Still, these are the ones Id absolutely recommend keeping