discard a card mtg Rules Text: Each player discards, 49 cards Black Discard Deck | Classic
Description
You might stumble across a lesser-known Japanese exclusive that you didnt realize existed, and then spend hours tracking it down on auction sites

But It turned out to be far more powerful than anyone could have expected, and it was swiftly banned in Standard, as well as several other formats

Great in Cube, gross in Commander

Build in shipping and platform fees

For example, the text of Valakut Exploration specifically says: You may play that card for as long as it remains exiled. The word play indicates that you can play lands that you exile with this ability
