The Item Finder allowed you to fetch a trainer card from the discard pile, in exchange for two cards from your hand
The artifact untapping that matters for this list is a combo with Tameshi, Reality Architect, Ancient Den, and another artifact land
thats your alternative cost and your only way to cast it from the graveyard
To facilitate that, youll probably want to pop Buster Sword onto an unblockable creature or one with trample, which will allow any unblocked damage to be passed onto your opponent
What Are Alt Art Pokmon TCG Cards and Why Are They Valuable
The short answer, really to my amazement, was that they broke expectation in a pretty significant way