In paper Magic (as opposed to online Magic), this is a rare occurrence and something that those in charge of Magics rules tend to avoid
You can choose two modes among dealing damage, drawing cards, making treasure, or copying your elemental / removing artifacts
Its as close as this niche effect gets to Tormod's Crypt
This makes Trekking Shoes a great option for decks that want cards in their discard piles, and also adds a nice bit of consistency through the Item-based draw power it provides
A few spike because people really want them, like Elesh Norn, Mother of Machines, which is often around the high teens
The only conditions were you have ethical dilemmas is when a portion of people disclose the fact the pack has been weighed and a portion of people dont