Ideally, this has the power of an instant Desert Twister in Dimir colors as if your foe has no hand, they discard what was bounced, but given the casting one spell restriction of the format, this is something that rarely happens here, making this just a discard of their worst card
Outside of these upgrades, we get an improved mana base, with channel lands and Mishra's Foundry, and a few sideboard improvements, like Reckoner Bankbuster for more card draw against control and Unlicensed Hearse over Lantern of the Lost for graveyard hate
Booster Boxes are a huge investment
(7/23/2021) Dice used must have equally likely outcomes and the roll must be fair
Even without any other cards the two Aether Refineries can make 8 energy just by themselves from their tap ability