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Theyre obviously very good, but if you feel that the Commander games that you play are samey or the format is getting solved or homogenized, then grabbing underused cards some people might have not even heard of before is a great way to make your deck feel more unique and special
Still, with a mill engine or entomb effects, you can emulate abilities from powerful artifacts in your graveyard like Palladium Myr, Gilded Lotus, Staff of Domination, and the like
When buying vintage cards, especially online, always ask for detailed photos of the front, back, corners, and edges
This is a very nice reprint to see
Thats why our sideboard should always prioritise answering the opponents hate cards