Being able to destroy a powerful artifact for just 1 mana is a really good deal, and the ability to create some tokens by sacrificing one of your own is a nice flexible touch
For example, Nibelheim Aflame can have a white creature deal damage to a creature with protection from red
these are very easy to spot, as the art has no borders and covers the entirety of the card, with a spectacular, textured foil treatment across the surface of the card too
One of the great things about this card is that you can be playing it turn three pretty easily
Pokmon, Magic: The Gathering, Yu-Gi-Oh!, Digimon Card Game, Dragon Ball Super, OnePiece, and much more
People use proxies for a bunch of extremely normal reasons: - Playtesting new decks before spending money - Commander upgrades without chasing down every last staple immediately - Cube maintenance (updating lists without re-buying a small nations GDP) - Kitchen table games where the goal is fun, not authentication theater - Protecting valuable cards by keeping originals safe while you play with substitutes If your group is on board, proxies are often the simplest way to keep games creative, fair, and actually happening