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Mill six cards, then return up to two instant and/or sorcery cards from your graveyard to your hand.
While it can neuter your own strategies if you arent careful, the current prevalence of Dimir Excruciator and Izzet Elementals makes this artifact a staple in any deck trying to survive the Standard ladder
That said, there are a couple of ways we can send it to the air, either by enchanting it with the backside of Lantern Bearer or by using Catlike Curiosity on a Brine Comber token or Katilda, Dawnhart Martyr, giving us a weird approximation of the old Curious Obsession Mono-Blue Tempo deck from Standard's past, especially after sideboarding, where we can back up its card-drawing power with a ton of counterspells
Collector boxes retraced ~20% to ~$325, potentially a buy-the-dip opportunity
For all practical purposes I forced him to discard a random card but with almost no chance of it impacting the game within the next few turns