mtg commander cat deck dog token (Commander / EDH Deck) I guess im building a
Description
The buyer still has to provide a card of the same rarity they either dont want or need, while the seller receives a card they can resell, repeating the process infinitely

The real value is when you cast it for its disturb cost, however, giving you a pseudo-Lier, Disciple of the Drowned effect

There are so many ways to completely break Skullclamp that it had to be banned in Modern and Legacy, but you can still use and abuse it in Vintage and Commander

Basically, it milled the opponent every time he or she cast a spell